polemic vs writer

polemic and writer both are nouns.

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

As nouns, writer is a hypernym of polemic; that is, writer is a word with a broader meaning than polemic:

polemic: a writer who argues in opposition to others (especially in theology)
writer: writes (books or stories or articles or the like) professionally (for pay)

Other hypernyms of polemic include author.

polemic (noun)	writer (noun)
a controversy (especially over a belief or dogma)	writes (books or stories or articles or the like) professionally (for pay)
a writer who argues in opposition to others (especially in theology)	a person who is able to write and has written something

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