polar vs polarity

polar is not a noun while polarity is a noun.

Word	Noun	Adjective	Verb	Adverb
polar	No	Yes	No	No
polarity	Yes	No	No	No

polar (noun)	polarity (noun)
	having an indicated pole (as the distinction between positive and negative electric charges)
	a relation between two opposite attributes or tendencies

polar (adjective)	polarity (adjective)
of or existing at or near a geographical pole or within the Arctic or Antarctic Circles
located at or near or coming from the earth's poles
having a pair of equal and opposite charges
extremely cold
being of crucial importance
characterized by opposite extremes; completely opposed