Synonyms for Warmth (same or very similar meaning)
WordNet sense 1 (a warmhearted feeling):
warmheartedness
WordNet sense 2 (the sensation caused by heat energy):
heat
WordNet sense 3 (the quality of having a moderate degree of heat):
warmness
WordNet sense 4 (the trait of being intensely emotional):
passion
WordNet sense 5 (a quality proceeding from feelings of affection or love):
fondness, affectionateness, lovingness
From the ODE community, based on WordNet
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