polysynthetic vs synthetic

polysynthetic is not a noun while synthetic is a noun.

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

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

polysynthetic (adjective)	synthetic (adjective)
forming derivative or compound words by putting together constituents each of which expresses a single definite meaning	of a proposition whose truth value is determined by observation or facts
	systematic combining of root and modifying elements into single words
	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