Noun

• S: (n) familiarity, intimacy, closeness (close or warm friendship) "the absence of fences created a mysterious intimacy in which no one knew privacy"
• S: (n) affair, affaire, intimacy, liaison, involvement, amour (a usually secretive or illicit sexual relationship)
• S: (n) closeness, intimacy (a feeling of being intimate and belonging together) "their closeness grew as the night wore on"