conversance vs familiarity

conversance and familiarity both are nouns.

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

As nouns, conversance and familiarity are synonyms defined as:

conversance and familiarity: personal knowledge or information about someone or something

Other synonyms of conversance include acquaintance, conversancy.

conversance (noun)	familiarity (noun)
personal knowledge or information about someone or something	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