hotness vs temperature

hotness and temperature both are nouns.

Word	Noun	Adjective	Verb	Adverb
hotness	Yes	No	No	No
temperature	Yes	No	No	No

As nouns, temperature is a hypernym of hotness; that is, temperature is a word with a broader meaning than hotness:

hotness: the presence of heat
temperature: the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)

hotness (noun)	temperature (noun)
the presence of heat	the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)
a hot spiciness	the somatic sensation of cold or heat
a state of sexual arousal