liaison vs intimacy

liaison and intimacy both are nouns.

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

As nouns, liaison and intimacy are synonyms defined as:

liaison and intimacy: a usually secretive or illicit sexual relationship

Other synonyms of liaison include affair, affaire, amour, involvement.

liaison (noun)	intimacy (noun)
a channel for communication between groups	close or warm friendship
a usually secretive or illicit sexual relationship	a feeling of being intimate and belonging together
	a usually secretive or illicit sexual relationship