Nouns

(n)heating, warmingthe process of becoming warmer; a rising temperature
(n)thaw, thawing, warmingwarm weather following a freeze; snow and ice melt“they welcomed the spring thaw”

Adjectives

(s)warmingimparting heat“a warming fire”
(s)calefacient, warmingproducing the sensation of heat when applied to the body“a mustard plaster is calefacient”