warming vs calefacient

warming is a noun but calefacient is not a noun.

Word	Noun	Adjective	Verb	Adverb
warming	Yes	Yes	No	No
calefacient	No	Yes	No	No

As adjectives, warming and calefacient are synonyms defined as:

warming and calefacient: producing the sensation of heat when applied to the body

warming (noun)	calefacient (noun)
warm weather following a freeze; snow and ice melt
the process of becoming warmer; a rising temperature

warming (adjective)	calefacient (adjective)
producing the sensation of heat when applied to the body	producing the sensation of heat when applied to the body
imparting heat