voluptuousness vs hot stuff

voluptuousness and hot stuff both are nouns.

Word	Noun	Adjective	Verb	Adverb
voluptuousness	Yes	No	No	No
hot stuff	Yes	No	No	No

As nouns, voluptuousness and hot stuff are synonyms defined as:

voluptuousness and hot stuff: the quality of being attractive and exciting (especially sexually exciting)

voluptuousness (noun)	hot stuff (noun)
the quality of having a well-rounded body	the quality of being attractive and exciting (especially sexually exciting)
the property of being lush and abundant and a pleasure to the senses	the quality of being popular
the quality of being attractive and exciting (especially sexually exciting)