faux vs imitation

faux is not a noun while imitation is a noun.

Word	Noun	Adjective	Verb	Adverb
faux	No	Yes	No	No
imitation	Yes	Yes	No	No

As adjectives, faux and imitation are synonyms defined as:

faux and imitation: not genuine or real; being an imitation of the genuine article

Other synonyms of faux include fake, false, simulated.

faux (noun)	imitation (noun)
	copying (or trying to copy) the actions of someone else
	something copied or derived from an original
	the doctrine that representations of nature or human behavior should be accurate imitations
	a representation of a person that is exaggerated for comic effect

faux (adjective)	imitation (adjective)
not genuine or real; being an imitation of the genuine article	not genuine or real; being an imitation of the genuine article