Nouns

(n)closeness, intimacya feeling of being intimate and belonging together“their closeness grew as the night wore on”
(n)stuffiness, closenessthe quality of being close and poorly ventilated
(n)nearness, closenessthe spatial property resulting from a relatively small distance“the sudden closeness of the dock sent him into action”
(n)closeness, secretivenesscharacterized by a lack of openness (especially about one's actions or purposes)
(n)familiarity, intimacy, closenessclose or warm friendship“the absence of fences created a mysterious intimacy in which no one knew privacy”