Cooperate vs Play nice

When to use each in English, with meaning, register, and examples.

Cooperate

Top 2,000 (common)C1verb

Play nice

InformalTop 5,000 (fairly common)
Most formal: CooperateMost common: Cooperate
 CooperatePlay nice
Pronunciation🇬🇧 /["/kəʊˈɒpəreɪt/","/kəʊˈɒpəreɪts/","/kəʊˈɒpəreɪtɪd/","/kəʊˈɒpəreɪtɪŋ/"]/🇺🇸 /["/kəʊˈɑːpəreɪt/","/kəʊˈɑːpəreɪts/","/kəʊˈɑːpəreɪtɪd/","/kəʊˈɑːpəreɪtɪŋ/"]/🇬🇧 //pleɪ naɪs//🇺🇸 //pleɪ naɪs//
MeaningTo work together with someone for a common purpose.Be friendly and cooperate with others.
ExampleThe two groups agreed to cooperate with each other.Please remember to play nice with your classmates during group activities.
RegisterNeutralInformal
How commonTop 2,000 (common)Top 5,000 (fairly common)
CEFR levelC1-
Part of speechverb
Collocationsfully, closely, will, would, agree to, in, on, with, fully, closely, will, would, agree to, in, on, withplay nice with others, play nice during games, always play nice
Antonymsoppose, disagree, compete-
Common mistakes'Cooperate' is often confused with 'collaborate', which has a slightly different nuance., Learners sometimes forget to use 'with' when mentioning the other party., Using 'cooperate' as a standalone verb without a context can be incorrect.Used 'play nice' too formally, which sounds awkward., Confused with 'play fair', which has a different meaning., Misunderstood as only physical play, ignoring social cooperation.
Usage notesUse 'cooperate' in contexts involving teamwork and collaboration. It's appropriate in both professional and casual settings, but avoid in overly informal conversations. Best used when discussing joint efforts in projects or activities.Used in casual conversations to advise cooperation. Avoid in formal contexts. Often said to children to encourage good behavior.

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Cooperate
Play nice

Frequently asked questions: Cooperate vs Play nice

What's the difference between Cooperate and Play nice?

Cooperate: To work together with someone for a common purpose. Play nice: Be friendly and cooperate with others.

Which is more formal: Cooperate and Play nice?

Cooperate is the most formal of these.

Which is more common: Cooperate and Play nice?

Cooperate is the most common in everyday English.

Can you show an example of each?

Cooperate: The two groups agreed to cooperate with each other. Play nice: Please remember to play nice with your classmates during group activities.

Can I use Cooperate and Play nice interchangeably?

Not always. Cooperate and Play nice are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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