impersonation vs put-on

impersonation and put-on both are nouns.

Word	Noun	Adjective	Verb	Adverb
impersonation	Yes	No	No	No
put-on	Yes	No	No	No

As nouns, put-on is a hyponym of impersonation; that is, put-on is a word with a more specific, narrower meaning than impersonation:

impersonation: a representation of a person that is exaggerated for comic effect
put-on: a composition that imitates or misrepresents somebody's style, usually in a humorous way

Other hyponyms of impersonation include mock-heroic, burlesque, lampoon, mockery, parody, pasquinade, send-up, sendup, spoof, takeoff, travesty.

impersonation (noun)	put-on (noun)
imitating the mannerisms of another person	something intended to deceive; deliberate trickery intended to gain an advantage
pretending to be another person	a ludicrous or grotesque act done for fun and amusement
a representation of a person that is exaggerated for comic effect	a composition that imitates or misrepresents somebody's style, usually in a humorous way