Nouns

(n)cosy, tea cosy, cozy, tea cozya padded cloth covering to keep a teapot warm

Adjectives

(s)cozy, cosy, snugenjoying or affording comforting warmth and shelter especially in a small space“a cozy nook near the fire”, “snug in bed”, “a snug little apartment”
(s)cozy, intimate, informal, cosyhaving or fostering a warm or friendly and informal atmosphere“had a cozy chat”, “a relaxed informal manner”, “an intimate cocktail lounge”, “the small room was cozy and intimate”
(s)cozy, cosysuggesting connivance“a cozy arrangement with the police”