impersonation vs sendup

impersonation and sendup both are nouns.

Word	Noun	Adjective	Verb	Adverb
impersonation	Yes	No	No	No
sendup	Yes	No	No	No

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

impersonation: a representation of a person that is exaggerated for comic effect
sendup: 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, put-on, send-up, spoof, takeoff, travesty.

impersonation (noun)	sendup (noun)
imitating the mannerisms of another person	a composition that imitates or misrepresents somebody's style, usually in a humorous way
pretending to be another person
a representation of a person that is exaggerated for comic effect