involvement vs intimacy

involvement and intimacy both are nouns.

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

As nouns, involvement and intimacy are synonyms defined as:

involvement and intimacy: a usually secretive or illicit sexual relationship

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

involvement (noun)	intimacy (noun)
the act of sharing in the activities of a group	close or warm friendship
a sense of concern with and curiosity about someone or something	a feeling of being intimate and belonging together
a connection of inclusion or containment	a usually secretive or illicit sexual relationship
a usually secretive or illicit sexual relationship
the condition of sharing in common with others (as fellows or partners etc.)