Act vs Perform

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

Act

Top 1,000 (very common)A2verb

Perform

Top 1,000 (very common)A2verb
 ActPerform
Pronunciation🇬🇧 /["/ækt/","/ækts/","/ˈæktɪd/","/ˈæktɪŋ/"]/🇺🇸 /["/ækt/","/ækts/","/ˈæktɪd/","/ˈæktɪŋ/"]/🇬🇧 /["/pəˈfɔːm/","/pəˈfɔːmz/","/pəˈfɔːmd/","/pəˈfɔːmɪŋ/"]/🇺🇸 /["/pərˈfɔːrm/","/pərˈfɔːrmz/","/pərˈfɔːrmd/","/pərˈfɔːrmɪŋ/"]/
MeaningTo do something or take action.to do something, especially in front of others
ExampleShe decided to act in the school play this year.She will perform a song at the concert tonight.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA2A2
Part of speechverbverb
Collocationsat once, immediately, promptly, against, for somebody, on behalf of somebody, act as if, act in somebody’s best interests, act in good faith, at once, immediately, promptly, against, for somebody, on behalf of somebody, act as if, act in somebody’s best interests, act in good faith, brilliantly, well, badly, brilliantly, well, badlylive, in public, publicly, first performed, rarely performed, see something performed, effectively, efficiently, properly, be able to, be unable to, be expected to, failure to perform something, admirably, beautifully, brilliantly, be able to, be unable to, be expected to
Antonymsignore, neglect, refrainneglect, ignore, abort
Common mistakes'Act' is sometimes confused with 'take action', which has a slightly different connotation., Learners often omit the preposition when using 'act on' phrases., 'Act' may be incorrectly used as a noun instead of a verb.Used incorrectly as 'performance' instead of 'perform', Confused with 'present', especially in a non-theatrical context, Using 'perform' without specifying what is being performed
Usage notesUse 'act' in both formal and informal contexts when referring to behavior. Avoid using it in overly casual settings when describing serious actions.Used in contexts such as theater, music, and tasks. Common in both informal and formal settings. Avoid when not discussing an action or task.

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Perform

Frequently asked questions: Act vs Perform

What's the difference between Act and Perform?

Act: To do something or take action. Perform: to do something, especially in front of others

Are Act and Perform the same CEFR level?

Act: A2, Perform: A2 on the CEFR scale.

What part of speech are Act and Perform?

Act: verb, Perform: verb.

Can you show an example of each?

Act: She decided to act in the school play this year. Perform: She will perform a song at the concert tonight.

Can I use Act and Perform interchangeably?

Not always. Act and Perform 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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