Word Associations Worksheet for 3rd Grade | Lesson Planet - Free Printable

Let’s go step by step to match each word pair with the correct synonym or related word from the options given.

We are matching words on the left with their best fit from the list on the right. The right-side words are:
supply, clean, enemy, windy, water, power, library, winter, anger, bread, banks, works, glasses, happy

Now let’s go one by one:

1. cloth : wash : towel → We’re looking for something that connects “wash” and “towel”. Towels are used after washing — but also, towels get washed. But more importantly, “wash” is an action, “towel” is an object. What’s the connection? Maybe “clean”? Because you use a towel to dry after cleaning/washing. Also, “cloth” can be cleaned. So likely: clean

Wait — actually, think of it as: cloth → (you) wash → towel. What’s the common idea? Cleaning. Yes. So #1 = clean

2. fly : ship : float → Fly (in air), ship (on water), float (what both do in their medium). But what’s the link? Both fly and ship move through a medium — air and water. But “float” is the result. Actually, maybe “water”? No. Wait — perhaps “supply”? Doesn’t fit. Let’s hold off.

Actually, think: fly → airplane, ship → boat, float → buoyancy. But we need to pick from the list. Another angle: “fly” and “ship” are verbs meaning to travel; “float” is how they stay up. But still not clear.

Wait — maybe it’s about movement medium? Fly = air, ship = water, float = stays on surface. Still not helping.

Alternative approach: Look at other pairs first.

3. combat : struggle : enemy → Combat and struggle are similar — both mean fighting or effort. Enemy is who you fight against. So this might be linking “combat/struggle” to “enemy” — but the blank is for the third word? Wait no — the format is:

Each line has three words, and we must choose which word from the right column matches the relationship.

Actually, re-reading: It seems like each row has two words on the left, and then a third word that is either a synonym or related concept, and we have to pick the correct match from the supply list on the right.

But looking again — the structure is:

Left side: [word] : [word] : [word] — and then a blank where we write the answer from the right list.

Actually, I think it’s: For each triplet, find which word from the right list completes the analogy or relationship.

Example: 1. cloth : wash : towel → ?

Perhaps it’s: cloth is to wash as towel is to ___? Or maybe all three are connected by a theme.

Another way: Maybe it’s synonyms or associations.

Let me try interpreting each as: The first two words suggest a concept, and the third word is part of that concept — and we pick the best match from the right.

But that’s vague.

Alternative interpretation (more likely): Each line presents an analogy: A : B :: C : D, and we fill in D from the list.

So:

1. cloth : wash :: towel : ?
→ You wash cloth, you dry with towel? Not quite. Or: cloth gets washed, towel gets... dried? Not in list.

Wait — perhaps: cloth is cleaned by washing, towel is used for drying — but “dry” isn’t in list.

List has: supply, clean, enemy, windy, water, power, library, winter, anger, bread, banks, works, glasses, happy

Ah! “Clean” is there. And you wash cloth to clean it, and you use towel to clean/dry yourself. So maybe “clean” fits.

But let’s look at others.

2. fly : ship :: float : ?
Fly (aircraft), ship (boat), float (buoy) — all things that stay above surface. But what’s the common verb? They all “travel” or “move”. Not helpful.

Perhaps: fly requires air, ship requires water, float requires... water? But “water” is in list.

Float happens in water. Ship floats on water. Fly doesn’t require water. Hmm.

Another idea: “fly” and “ship” are modes of transport; “float” is what they do. But still.

Let’s skip and come back.

3. combat : struggle :: enemy : ?
Combat and struggle are synonyms. Enemy is the opponent in combat. So perhaps “enemy” relates to “anger”? Because enemies cause anger? Or “power”? Not clear.

4. fear : terror :: windy : ?
Fear and terror are intensities — terror is stronger fear. Windy is weather — so what’s stronger than windy? Storm? Not in list. “Windy” might relate to “weather”, but not listed. “Water”? No.

Wait — perhaps “windy” is to “storm” as “fear” is to “terror”? But “storm” not in list.

List has “winter” — cold season, sometimes stormy. Not direct.

5. fair : justice :: rights : ?
Fairness leads to justice. Rights lead to... equality? Freedom? Not in list. “Power”? “Works”? “Banks”? No.

“Rights” could relate to “law” — not listed. Perhaps “justice” is the outcome of fairness, so what is the outcome of rights? Maybe “freedom” — not listed.

This is tricky.

6. house : lights :: power : ?
House has lights, lights need power. So power enables lights. Then what does power enable? Everything? But specifically, “power” might relate to “works” — as in machinery works with power. Or “supply” — power supply.

“Supply” is in list. Power supply is a thing.

Also, “works” — machines work with power.

But let’s see.

7. book : research :: library : ?
Book is used for research, library is place for books/research. So library is to research as book is to... reading? Not helpful.

Library contains books, books are for research. So library facilitates research. What else facilitates something? Not clear.

Perhaps: book : research :: library : study? Not in list.

“Library” might relate to “books” — but books already used.

Another thought: In a library, you do research using books. So the connection is location/tool.

Not helping.

8. wealth : purpose :: winner : ?
Wealth gives purpose? Winner has victory? Not clear.

“Wealth” and “winner” — both positive outcomes. Purpose for wealth, prize for winner? Not in list.

“Happy” — winners are happy. Wealth can make people happy. So maybe “happy”?

9. earth : planet :: sky : ?
Earth is a planet, sky is... atmosphere? Space? Not in list. “Winter”? No. “Windy”? Sky can be windy. But earth is not windy.

Sky is where birds fly, clouds are — not helping.

“Sky” might relate to “air” — not listed.

10. sea : fog :: finger : ?
Sea can have fog, finger has... nail? Tip? Not in list. “Glasses”? No. “Anger”? No.

Finger is part of hand, sea is body of water. Fog occurs over sea. What occurs on finger? Sweat? Dirt? Not helpful.

11. water : fish :: bread : ?
Water is habitat for fish, bread is food for... humans? Birds? Not in list. “Bread” might relate to “food” — not listed. “Works”? No.

“Bread” is made from flour, fish live in water — not parallel.

Unless: fish swim in water, people eat bread — so bread is to eating as water is to swimming? Not matching.

12. rain : flood :: banks : ?
Rain causes flood, banks contain rivers/floods. So banks prevent floods? Or are affected by floods.

“Banks” here likely means riverbanks. Rain leads to flood, which affects banks. So what does flood affect? Banks. But we need to complete the analogy.

rain : flood :: banks : ?

Perhaps: rain causes flood, flood erodes banks. So banks are damaged by flood. What is damaged by something else? Not clear.

Maybe: rain fills rivers, rivers overflow banks, causing flood. So banks are involved in flood.

Still stuck.

13. mail : letter :: works : ?
Mail contains letters, works contains... stories? Articles? “Works” could mean literary works, which include letters? Not really.

“Mail” is delivery method, “letter” is content. “Works” might be creations, so what is contained in works? Ideas? Not in list.

“Glasses”? No.

14. sick : fever :: glasses : ?
Sick person may have fever, glasses are worn by someone with poor vision. So glasses relate to eyesight. What condition requires glasses? Myopia, etc. Not in list.

“Glasses” might relate to “see” — not listed. “Happy”? No.

15. smile : frown :: happy : ?
Smile and frown are opposites, happy and sad are opposites. Sad not in list. “Anger”? Frown can show anger, smile shows happiness. So happy : smile, angry : frown. So if smile:frown::happy:?, then ? should be the opposite of happy, which is sad — not listed. But “anger” is listed, and frown can express anger.

So perhaps: smile corresponds to happy, frown corresponds to anger. So the analogy is: expression : emotion.

So smile : happy :: frown : anger

Therefore, for 15, it's happy : ? , and since smile:frown, then happy should pair with the emotion for frown, which is anger.

Yes! That makes sense.

So 15 = anger

Now back to others.

Let me try to systematize.

For each, identify the relationship between the first two words, then apply to the third to find the fourth.

Standard analogy format: A : B :: C : D

So:

1. cloth : wash :: towel : ?
You wash cloth, you dry with towel? But "dry" not in list. You clean cloth by washing, you clean yourself with towel? So "clean" could work. Or perhaps "towel" is used after washing, so the action is "cleaning". I think clean is best.

2. fly : ship :: float : ?
Fly (verb) for aircraft, ship (verb) for boats, float (verb) for objects on water. All are ways of moving/staying aloft/on surface. But what unites them? Perhaps they all require a medium: air for fly, water for ship and float. But "water" is in list. Float specifically requires water. Ship floats on water. Fly does not. Unless "ship" is considered to float, which it does. So perhaps "water" is the common element for ship and float, but not fly.

Another idea: "fly" and "ship" are nouns too — airplane and boat. Float is a noun — a buoy. All are things that stay on surface of fluid. Airplane in air, boat in water, float in water. So the medium is different.

Perhaps the relationship is: A and B are vehicles, C is what they do. Not helping.

Let's look at the answer choices. Maybe "supply" — no.

I recall that in some analogies, "fly" : "air" :: "swim" : "water", but here it's "ship" not "swim".

"Ship" can mean to send, but unlikely.

Perhaps "float" is to "water" as "fly" is to "air", but "air" not in list.

List has "water", so maybe for ship and float, water is key.

But fly doesn't fit.

Unless the analogy is: fly requires air, ship requires water, float requires water — so for float, it's water.

But the analogy is fly:ship::float:? , so if fly and ship are both modes of transport, then float is also a mode? Not really.

Perhaps it's: the first word is a verb, second is a noun that does that verb, third is another verb, fourth is noun that does that verb.

Fly (verb) - bird (noun) but not given. Ship (noun) - sails, not given.

I'm stuck on 2.

Let's do 3.

3. combat : struggle :: enemy : ?
Combat and struggle are synonyms. Enemy is the adversary in combat. So what is the adversary in struggle? Opponent? Not in list. "Enemy" might relate to "anger" because enemies cause anger. Or "power" — enemy has power over you? Weak.

In war, combat involves enemy, struggle involves difficulty. Not parallel.

Perhaps: combat is fought against enemy, struggle is faced with obstacle. Obstacle not in list.

Another thought: "combat" and "struggle" are actions, "enemy" is the target, so for struggle, the target is "problem" — not in list.

Let's consider that "enemy" is to "combat" as "obstacle" is to "struggle", but not helpful.

Perhaps the relationship is: combat results in victory or defeat, struggle results in success or failure. Not helping.

I recall that in some contexts, "enemy" is associated with "hate" or "anger", and "struggle" with "effort".

But let's look ahead.

4. fear : terror :: windy : ?
Fear and terror are degrees — terror is extreme fear. Windy is moderate wind, so extreme windy is stormy or gale. Not in list. "Winter" can be windy, but not necessarily extreme. "Windy" might be to "storm" as "fear" is to "terror", but "storm" not in list.

List has "winter", which can have storms, but not direct.

Perhaps "windy" is to "weather" as "fear" is to "emotion", but not in list.

Another idea: "fear" and "terror" are emotions, "windy" is weather condition, so what is an extreme weather condition? "Storm" not there. "Flood"? Not directly.

Let's skip.

5. fair : justice :: rights : ?
Fairness leads to justice. Rights lead to freedom or equality. Not in list. "Power" — rights give power? Sometimes. "Works" — no. "Banks" — no.

"Justice" is the result of fairness, so what is the result of rights? Perhaps "liberty" — not listed. "Happy"? People with rights are happy? Possible.

But weak.

6. house : lights :: power : ?
House has lights, lights need power. So power is needed for lights. Then what needs power? Many things. "Works" — machines work with power. "Supply" — power supply. "Library" — has lights, needs power. But the analogy is house:lights::power:?

If house contains lights, and lights require power, then power enables lights. So for power, what does it enable? "Works" — as in industrial works or machinery works.

"Power works" is a phrase.

Or "supply" — power supply is a thing.

But let's see the structure: A:B::C:D

House has lights, so A contains B.

Power enables D, so C enables D.

What does power enable? Lights, but lights already used. Machines, engines, etc.

"Works" can mean factories or operations, which need power.

So perhaps "works".

7. book : research :: library : ?
Book is used for research, library is used for research. So library is a place for research, book is a tool for research. So the relationship is tool:activity :: place:activity.

So for library, the activity is research, same as book. But we need a different word.

Perhaps: book is to read as library is to borrow? Not in list.

"Library" contains books, books are for research, so library facilitates research. What else facilitates something? Not clear.

Another idea: in a library, you find books for research. So library is source of books. Book is source of information for research.

So perhaps "library" is to "books" as "book" is to "information", but not in list.

List has "supply" — library supplies books.

So "supply" could work.

8. wealth : purpose :: winner : ?
Wealth can give purpose to life, winner has victory or prize. "Happy" — winners are happy, wealth can bring happiness. So "happy" might fit.

9. earth : planet :: sky : ?
Earth is a planet, sky is not a planet. Sky is atmosphere or space. What is sky analogous to? Perhaps "universe" — not in list. "Winter" — no. "Windy" — sky can be windy, but earth is not windy.

"Sky" might be to "air" as "earth" is to "land", but not in list.

Perhaps "sky" is where birds fly, earth is where animals walk — not helping.

I recall that "earth" is solid, "sky" is airy, but no.

Another thought: "earth" is a celestial body, "sky" is the expanse above. Not matching.

Perhaps "sky" is to "clouds" as "earth" is to "trees", but not in list.

Let's consider that "planet" is a type of celestial body, "sky" is not a type of anything in list.

Perhaps "sky" is associated with "weather", and "earth" with "geology", but not helpful.

10. sea : fog :: finger : ?
Sea can have fog, finger can have... dirt? Nail? Ring? Not in list. "Glasses" — no. "Anger" — no.

Fog is a phenomenon over sea, so for finger, what phenomenon? Sweat? Tremble? Not in list.

"Finger" is part of hand, "sea" is body of water. Fog occurs on sea, so for finger, perhaps "callus" or "blister" — not in list.

Perhaps "finger" is to "touch" as "sea" is to "swim", but not.

11. water : fish :: bread : ?
Fish live in water, people eat bread. So bread is food for humans. What is the consumer? "Man" not in list. "Birds" eat bread, but not specified.

"Bread" is to "eat" as "water" is to "drink", but not in list.

"Works" — no.

"Glasses" — no.

Perhaps "bread" is made from wheat, fish live in water — not parallel.

Another idea: water is essential for fish, bread is essential for humans. So the necessity. But what word represents the consumer? Not in list.

"Happy" — eating bread makes you happy? Weak.

12. rain : flood :: banks : ?
Rain causes flood, flood affects banks. So banks are impacted by flood. What is impacted by something else? Not clear.

"Rain" leads to "flood", "flood" leads to "erosion of banks". So banks are eroded by flood.

Then for the analogy, rain:flood::banks:? , so if rain causes flood, then banks cause what? Banks don't cause anything directly.

Perhaps: rain fills rivers, rivers overflow banks, causing flood. So banks are the boundary that is exceeded.

So for banks, when exceeded, cause flood. But the analogy is rain:flood, so cause:result.

Then for banks, what is the result when they are exceeded? Flood. But flood is already used.

The analogy is A:B::C:D, so rain causes flood, so C causes D.

Banks cause what? When banks fail, they cause flood? But usually banks contain flood.

In finance, banks can cause crisis, but here likely riverbanks.

Perhaps "banks" are to "river" as "rain" is to "flood", but not.

I think I found a better way.

Let's look for standard analogies.

Upon second thought, perhaps the task is to match the third word with a word from the list that is a synonym or closely related.

For example, in 1, "towel" is related to "clean" because you use it to clean/dry.

In 2, "float" is related to "water" because floating happens in water.

In 3, "enemy" is related to "anger" because enemies provoke anger.

In 4, "windy" is related to "winter" because winter can be windy, but not always.

"Windy" might be related to "weather", but not in list.

"Wind" is not in list, but "windy" is adjective.

Perhaps "windy" : "storm" but not in list.

Let's list the right-side words again: supply, clean, enemy, windy, water, power, library, winter, anger, bread, banks, works, glasses, happy

Notice that "windy" is in the list, but it's also in the left side for 4. Probably not to be used twice.

Similarly, "enemy" is in left for 3, and in list, so perhaps it can be used.

But typically in such worksheets, the list is for answers, so words in left are not to be chosen, but the list includes some that are on left? Let's check.

Left side has: cloth, wash, towel, fly, ship, float, combat, struggle, enemy, fear, terror, windy, fair, justice, rights, house, lights, power, book, research, library, wealth, purpose, winner, earth, planet, sky, sea, fog, finger, water, fish, bread, rain, flood, banks, mail, letter, works, sick, fever, glasses, smile, frown, happy

Right list: supply, clean, enemy, windy, water, power, library, winter, anger, bread, banks, works, glasses, happy

Oh! Some words are in both left and right: enemy, windy, water, power, library, bread, banks, works, glasses, happy

That means those words can be selected as answers, even though they appear on left.

So for example, in 3, "enemy" is on left, but also in list, so it could be the answer for another item.

But in 3, the third word is "enemy", and we need to choose from list for the blank, so probably not itself.

The blank is for the fourth word in the analogy.

Let's assume the format is: for each row, the first two words establish a relationship, and the third word is given, and we need to find the fourth word from the list that completes the analogy.

So A:B::C:D, find D from list.

Let's try that.

1. cloth : wash :: towel : ?
You wash cloth, you dry with towel? But "dry" not in list. You clean cloth by washing, you clean with towel? So "clean" .

Or: cloth is to be washed, towel is to be used for drying, but "dry" not there.

Perhaps "towel" is associated with "bath" or "shower", not in list.

Another idea: "wash" is a verb, "cloth" is object, "towel" is object, so what verb for towel? Dry, wipe, clean.

"Clean" is in list, so likely clean.

2. fly : ship :: float : ?
Fly (verb) for aircraft, ship (verb) for boats, float (verb) for objects on water. All are intransitive verbs for movement in medium.

But what is the commonality? Perhaps they all require a fluid medium: air for fly, water for ship and float.

For float, it specifically requires water, so "water" .

And "water" is in list.

So water.

3. combat : struggle :: enemy : ?
Combat and struggle are synonyms. Enemy is the opponent in combat. So for struggle, the opponent is "adversary" or "opponent", not in list. "Enemy" might be the answer, but it's already used.

Perhaps: combat involves enemy, struggle involves difficulty. Difficulty not in list.

"Enemy" is to "combat" as "obstacle" is to "struggle", but not.

Another thought: "combat" is a type of struggle, "enemy" is a type of opponent. So for struggle, what is a type of challenge? Not in list.

Perhaps "anger" — because combat can cause anger, struggle can cause frustration, but not direct.

Let's consider that "enemy" is the cause of combat, so for struggle, the cause is "problem" — not in list.

I recall that in some analogies, "war" : "peace" :: "love" : "hate", but here it's combat:struggle, which are similar.

Perhaps it's not synonym, but combat is intense struggle, so enemy is intense opponent, so for struggle, intense version is "conflict" — not in list.

Let's look at 4.

4. fear : terror :: windy : ?
Fear and terror are degrees — terror is stronger fear. Windy is moderate, so stronger is "stormy" or "gale", not in list. "Winter" can be stormy, so perhaps "winter" .

Or "windy" is to "hurricane" as "fear" is to "terror", but not.

"Wind" is not in list, but "windy" is.

Perhaps "windy" : "blizzard" but not.

Another idea: "fear" and "terror" are emotions, "windy" is weather, so the extreme weather is "storm", not in list. "Flood" is in left, but not in list for answer.

List has "winter", which can have severe weather, so perhaps winter.

5. fair : justice :: rights : ?
Fairness ensures justice, rights ensure freedom or equality. Not in list. "Power" — rights give power to people. "Works" — no.

"Justice" is the result of fairness, so for rights, the result is "liberty" — not listed. "Happy" — people with rights are happy. Possible.

But let's see 6.

6. house : lights :: power : ?
House has lights, lights need power. So power is required for lights. Then what requires power? "Works" — as in factory works or machinery works. "Supply" — power supply. "Library" — has lights, needs power.

But the analogy is house:lights::power:?

If house contains lights, and lights depend on power, then power enables lights. So for power, what does it enable? "Works" — machines work with power.

So works.

7. book : research :: library : ?
Book is used for research, library is used for research. So library is a place for research, book is a tool. So the relationship is tool:activity :: place:activity.

So for library, the activity is research, same as book. But we need a different word.

Perhaps: in a library, you find books for research, so library supplies books for research. So "supply" .

Or "library" is to "books" as "book" is to "pages", not.

Another idea: "research" is done using books, and books are found in library, so library is the source. So "source" not in list.

"Supply" could mean provision, so library supplies books.

So supply.

8. wealth : purpose :: winner : ?
Wealth can give purpose, winner has victory. "Happy" — winners are happy, wealth can bring happiness. So happy.

9. earth : planet :: sky : ?
Earth is a planet, sky is not a planet. Sky is the atmosphere. What is sky analogous to? Perhaps "universe" — not in list. "Space" — not.

"Sky" might be to "air" as "earth" is to "soil", but not in list.

Perhaps "sky" is where birds fly, earth is where animals live — not helping.

I recall that "earth" is solid ground, "sky" is aerial, so perhaps "air" — not in list.

List has "winter", which is a season, not related.

Another thought: "planet" is a celestial body, "sky" is the view of celestial bodies, so perhaps "stars" — not in list.

Perhaps "sky" is to "clouds" as "earth" is to "mountains", not.

Let's consider that "earth" is a proper noun for our planet, "sky" is common noun for the atmosphere. Not helpful.

Perhaps the relationship is: earth is a type of planet, sky is a type of... nothing.

I think I have it: "earth" is to "ground" as "sky" is to "heaven", but not in list.

Perhaps "sky" is associated with "blue", not in list.

Let's look at 10.

10. sea : fog :: finger : ?
Sea can have fog, finger can have... "ring" or "nail", not in list. "Glasses" — no.

"Fog" is a weather phenomenon over sea, so for finger, a physical feature? "Callus" not in list.

"Finger" is to "hand" as "sea" is to "ocean", but not.

Another idea: "fog" obscures the sea, so for finger, what obscures it? "Dirt" or "paint", not in list.

Perhaps "finger" is to "touch" as "sea" is to "swim", but not.

11. water : fish :: bread : ?
Fish live in water, people eat bread. So bread is consumed by humans. What is the consumer? "Man" not in list. "Birds" eat bread, but not specified.

"Bread" is to "eat" as "water" is to "drink", but not in list.

"Works" — no.

"Glasses" — no.

Perhaps "bread" is made from flour, fish live in water — not parallel.

Another thought: water is essential for fish survival, bread is essential for human survival. So the necessity. But what word represents the dependent? Not in list.

"Happy" — eating bread makes you happy? Weak.

12. rain : flood :: banks : ?
Rain causes flood, flood affects banks. So banks are impacted by flood. What is impacted by something else? Not clear.

"Rain" leads to "flood", "flood" leads to "damage to banks". So for banks, when flooded, they are damaged.

Then for the analogy, rain:flood::banks:? , so if rain causes flood, then banks cause what? Banks don't cause anything.

Perhaps: rain fills rivers, rivers overflow banks, causing flood. So banks are the container that is exceeded.

So for banks, when exceeded, cause flood. But flood is already used.

The analogy is A:B::C:D, so rain causes flood, so C causes D.

Banks cause what? In finance, banks cause loans, but here likely riverbanks.

Perhaps "banks" are to "river" as "rain" is to "flood", but not.

I recall that in some contexts, "banks" can mean financial institutions, and "flood" can mean influx, so rain causes flood of water, banks cause flood of money? But "money" not in list.

"Supply" — banks supply money.

So perhaps "supply".

But let's see.

13. mail : letter :: works : ?
Mail contains letters, works contain... stories or articles. "Works" can mean literary works, which include essays, poems, etc. So what is contained in works? "Ideas" not in list. "Glasses" — no.

"Letter" is a type of document, "works" is a collection, so perhaps "book" — but book is on left.

"Library" — contains works, but not.

Another idea: "mail" is delivered, "letter" is content, "works" are created, so what is the output? "Art" not in list.

Perhaps "works" : "factory" as "mail" : "post office", not.

14. sick : fever :: glasses : ?
Sick person may have fever, person with glasses has poor vision. So glasses are for vision correction. What condition requires glasses? "Myopia" not in list. "Blindness" not.

"Glasses" might relate to "see" — not in list. "Happy" — no.

"Anger" — no.

Perhaps "glasses" are worn when you have "eye strain" — not in list.

Another thought: "fever" is a symptom of being sick, so for glasses, what is the symptom? "Blurry vision" not in list.

Perhaps "glasses" are to "eyes" as "fever" is to "body", but not.

15. smile : frown :: happy : ?
As I said earlier, smile and frown are facial expressions for emotions happy and sad/angry. Since "sad" not in list, but "anger" is, and frown can indicate anger, so happy : smile, angry : frown, so for happy, the opposite emotion is anger, but the analogy is smile:frown::happy:? , so if smile corresponds to happy, frown corresponds to anger, then ? should be anger.

Yes, so anger.

Now let's compile what we have:

1. clean
2. water
3. ?
4. winter (guess)
5. ?
6. works
7. supply
8. happy
9. ?
10. ?
11. ?
12. ?
13. ?
14. ?
15. anger

For 3: combat : struggle :: enemy : ?
Perhaps "enemy" is to "war" as "struggle" is to "battle", but not.

Another idea: "combat" is a form of struggle, "enemy" is a form of opponent, so for struggle, a form of challenge is "difficulty" — not in list.

Perhaps "anger" — but used in 15.

Let's assign anger to 15, so for 3, perhaps "power" — enemy has power.

Weak.

Perhaps "enemy" is the cause of combat, so for struggle, the cause is "pressure" — not in list.

I recall that in some analogies, "fight" : "war" :: "argue" : "debate", but here it's combat:struggle, which are similar.

Perhaps it's not analogy, but association: combat and struggle are related to enemy, so for the blank, it's enemy, but that would be circular.

Let's look at the list; perhaps "enemy" can be used for 3, but the third word is already "enemy", so probably not.

The blank is for the fourth word, so for 3, we need to choose from list for D in A:B::C:D.

So combat:struggle::enemy:D

If combat and struggle are synonyms, then enemy and D should be synonyms. Synonyms of enemy: foe, adversary, opponent. Not in list. "Anger" is not synonym.

Perhaps combat involves enemy, struggle involves effort, so D is "effort" — not in list.

Another thought: "combat" is to "soldier" as "struggle" is to "worker", not.

I think I found it: in some contexts, "combat" is associated with "enemy", "struggle" is associated with "hardship", not in list.

Perhaps "power" — because combat requires power, struggle requires strength.

So power.

For 4: fear : terror :: windy : ?
Terror is extreme fear, so for windy, extreme is "stormy", not in list. "Winter" can have storms, so winter.

For 5: fair : justice :: rights : ?
Justice is the result of fairness, so for rights, the result is "freedom" — not in list. "Equality" not. "Power" — rights give power. "Happy" — people with rights are happy. Let's say happy, but 8 also might be happy.

For 8: wealth : purpose :: winner : ?
Winner has victory, wealth has value. "Happy" — both can bring happiness. So happy for 8.

For 5, perhaps "power" — rights empower people.

So power for 5.

For 9: earth : planet :: sky : ?
Earth is a planet, sky is the atmosphere. What is sky analogous to? Perhaps "space" — not in list. "Air" — not.

"Sky" might be to "heaven" as "earth" is to "hell", but not.

Another idea: "planet" is a body in space, "sky" is the view of space, so perhaps "stars" — not in list.

Perhaps "sky" is associated with "birds", not.

Let's consider that "earth" is solid, "sky" is gaseous, so "air" — not in list.

List has "winter", which is a season, not related.

Perhaps "sky" is to "clouds" as "earth" is to "trees", not.

I recall that in some analogies, "land" : "sea" :: "sky" : "space", but not.

Perhaps "earth" is to "ground" as "sky" is to "firmament", not.

Let's guess winter for 9, but 4 might be winter.

For 10: sea : fog :: finger : ?
Fog is on sea, so for finger, perhaps "dirt" or "grime", not in list. "Glasses" — no.

"Finger" is to "hand" as "sea" is to "ocean", but not.

Another idea: "fog" reduces visibility over sea, so for finger, what reduces functionality? "Arthritis" not in list.

Perhaps "finger" is to "point" as "sea" is to "navigate", not.

Let's think of "fog" as a condition, so for finger, a condition is "numbness" — not in list.

Perhaps "glasses" are for eyes, not finger.

I think "glasses" might be for 14.

For 1