unfamiliarity vs familiarity

unfamiliarity and familiarity both are nouns.

Word	Noun	Adjective	Verb	Adverb
unfamiliarity	Yes	No	No	No
familiarity	Yes	No	No	No

unfamiliarity (noun)	familiarity (noun)
unusualness as a consequence of not being well known	an act of undue intimacy
	usualness by virtue of being familiar or well known
	close or warm friendship
	a casual manner
	personal knowledge or information about someone or something