impersonation vs impersonate

impersonation is a noun but impersonate is not a noun.

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

impersonation (noun)	impersonate (noun)
imitating the mannerisms of another person
pretending to be another person
a representation of a person that is exaggerated for comic effect

impersonation (verb)	impersonate (verb)
	pretend to be someone you are not; sometimes with fraudulent intentions
	represent another person with comic intentions
	assume or act the character of