impersonation vs performing

impersonation and performing both are nouns.

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

As nouns, performing is a hypernym of impersonation; that is, performing is a word with a broader meaning than impersonation:

Other hypernyms of impersonation include acting, playacting, playing.

impersonation (noun)	performing (noun)
imitating the mannerisms of another person	the performance of a part or role in a drama
pretending to be another person
a representation of a person that is exaggerated for comic effect