syncretistic vs syncretism

syncretistic is not a noun while syncretism is a noun.

Word	Noun	Adjective	Verb	Adverb
syncretistic	No	Yes	No	No
syncretism	Yes	No	No	No

syncretistic (noun)	syncretism (noun)
	the fusion of originally different inflected forms (resulting in a reduction in the use of inflections)
	the union (or attempted fusion) of different systems of thought or belief (especially in religion or philosophy)

syncretistic (adjective)	syncretism (adjective)
of or characterized by syncretism
relating to a historical tendency for a language to reduce its use of inflections