habitus vs squattiness

habitus and squattiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
habitus	Yes	No	No	No
squattiness	Yes	No	No	No

As nouns, squattiness is a hyponym of habitus; that is, squattiness is a word with a more specific, narrower meaning than habitus:

Other hyponyms of habitus include lankiness, dumpiness, body type, somatotype.

habitus (noun)	squattiness (noun)
constitution of the human body	a short and stout physique
person's predisposition to be affected by something (as a disease)