buxomness vs embonpoint

buxomness and embonpoint both are nouns.

Word	Noun	Adjective	Verb	Adverb
buxomness	Yes	No	No	No
embonpoint	Yes	Yes	No	No

As nouns, embonpoint is a hypernym of buxomness; that is, embonpoint is a word with a broader meaning than buxomness:

buxomness: the bodily property of being attractively plump and vigorous and (of women) full-bosomed
embonpoint: the bodily property of being well rounded

Other hypernyms of buxomness include plumpness, roundness.

buxomness (noun)	embonpoint (noun)
the bodily property of being attractively plump and vigorous and (of women) full-bosomed	the bodily property of being well rounded

buxomness (adjective)	embonpoint (adjective)
	sufficiently fat so as to have a pleasing fullness of figure