intimacy vs familiarity

intimacy and familiarity both are nouns.

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

As nouns, intimacy and familiarity are synonyms defined as:

Other synonyms of intimacy include closeness.

intimacy (noun)	familiarity (noun)
close or warm friendship	an act of undue intimacy
a feeling of being intimate and belonging together	usualness by virtue of being familiar or well known
a usually secretive or illicit sexual relationship	close or warm friendship
	a casual manner
	personal knowledge or information about someone or something