genu valgum vs disability

genu valgum and disability both are nouns.

Word	Noun	Adjective	Verb	Adverb
genu valgum	Yes	No	No	No
disability	Yes	No	No	No

As nouns, disability is a hypernym of genu valgum; that is, disability is a word with a broader meaning than genu valgum:

genu valgum: an inward slant of the thigh
disability: the condition of being unable to perform as a consequence of physical or mental unfitness

Other hypernyms of genu valgum include disablement, handicap, impairment.

genu valgum (noun)	disability (noun)
an inward slant of the thigh	the condition of being unable to perform as a consequence of physical or mental unfitness