hot stuff vs voluptuousness

hot stuff and voluptuousness both are nouns.

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

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

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

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