Meaning : Close or warm friendship.
Example :
The absence of fences created a mysterious intimacy in which no one knew privacy.
Synonyms : closeness, familiarity
Meaning : A usually secretive or illicit sexual relationship.
Synonyms : affair, affaire, amour, involvement, liaison
Meaning : A feeling of being intimate and belonging together.
Example :
Their closeness grew as the night wore on.
Synonyms : closeness