impersonation vs wittiness

impersonation and wittiness both are nouns.

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

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

impersonation: a representation of a person that is exaggerated for comic effect
wittiness: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter

Other hypernyms of impersonation include humor, humour, wit, witticism.

impersonation (noun)	wittiness (noun)
imitating the mannerisms of another person	The quality of being clever, amusingly ingenious.
pretending to be another person	a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
a representation of a person that is exaggerated for comic effect