imitative vs synthetic

imitative is not a noun while synthetic is a noun.

Word	Noun	Adjective	Verb	Adverb
imitative	No	Yes	No	No
synthetic	Yes	Yes	No	No

imitative (noun)	synthetic (noun)
	a compound made artificially by chemical reactions

imitative (adjective)	synthetic (adjective)
marked by or given to imitation	of a proposition whose truth value is determined by observation or facts
(of words) formed in imitation of a natural sound	systematic combining of root and modifying elements into single words
not genuine; imitating something superior	involving or of the nature of synthesis (combining separate elements to form a coherent whole) as opposed to analysis
	not of natural origin; prepared or made artificially
	not genuine or natural
	artificial as if portrayed in a film