synthetic vs imitative

synthetic is a noun but imitative is not a noun.

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

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

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