impostor vs fake

impostor and fake both are nouns.

Word	Noun	Adjective	Verb	Adverb
impostor	Yes	No	No	No
fake	Yes	Yes	Yes	No

As nouns, impostor and fake are synonyms defined as:

Other synonyms of impostor include faker, fraud, imposter, pretender, pseud, pseudo, role player, sham, shammer.

impostor (noun)	fake (noun)
a person who makes deceitful pretenses	(football) a deceptive move made by a football player
	something that is a counterfeit; not what it seems to be
	a person who makes deceitful pretenses

impostor (adjective)	fake (adjective)
	not genuine or real; being an imitation of the genuine article
	fraudulent; having a misleading appearance

impostor (verb)	fake (verb)
	speak insincerely or without regard for facts or truths
	make a copy of with the intent to deceive
	tamper, with the purpose of deception