polemic vs polemicist

polemic and polemicist both are nouns.

Word	Noun	Adjective	Verb	Adverb
polemic	Yes	Yes	No	No
polemicist	Yes	No	No	No

As nouns, polemic and polemicist are synonyms defined as:

polemic and polemicist: a writer who argues in opposition to others (especially in theology)

Other synonyms of polemic include polemist.

polemic (noun)	polemicist (noun)
a controversy (especially over a belief or dogma)	a writer who argues in opposition to others (especially in theology)
a writer who argues in opposition to others (especially in theology)

polemic (adjective)	polemicist (adjective)
of or involving dispute or controversy