polemicise vs scrap

polemicise is not a noun while scrap is a noun.

Word	Noun	Adjective	Verb	Adverb
polemicise	No	No	Yes	No
scrap	Yes	No	Yes	No

As verbs, scrap is a hypernym of polemicise; that is, scrap is a word with a broader meaning than polemicise:

Other hypernyms of polemicise include altercate, argufy, dispute, quarrel.

polemicise (noun)	scrap (noun)
	the act of fighting; any contest or struggle
	a small piece of something that is left over after the rest has been used
	a small fragment of something broken off from the whole
	worthless material that is to be disposed of

polemicise (verb)	scrap (verb)
engage in a controversy	make into scrap or refuse
	have a disagreement over something
	dispose of (something useless or old)