hypophysial dwarf vs nanus

hypophysial dwarf and nanus both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypophysial dwarf	Yes	No	No	No
nanus	Yes	No	No	No

As nouns, nanus is a hypernym of hypophysial dwarf; that is, nanus is a word with a broader meaning than hypophysial dwarf:

hypophysial dwarf: a dwarf whose condition is caused by a deficiency of growth hormones, rather than by genetic factors (as in the case of the achondroplastic dwarf)
nanus: a person who is markedly small

Other hypernyms of hypophysial dwarf include dwarf, midget.

hypophysial dwarf (noun)	nanus (noun)
a dwarf whose condition is caused by a deficiency of growth hormones, rather than by genetic factors (as in the case of the achondroplastic dwarf)	a person who is markedly small