body-build vs dumpiness

body-build and dumpiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
body-build	Yes	No	No	No
dumpiness	Yes	No	No	No

As nouns, dumpiness is a hyponym of body-build; that is, dumpiness is a word with a more specific, narrower meaning than body-build:

Other hyponyms of body-build include lankiness, squattiness, body type, somatotype.

body-build (noun)	dumpiness (noun)
constitution of the human body	a short and stout physique