genu valgum vs impairment

genu valgum and impairment both are nouns.

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

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

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

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

genu valgum (noun)	impairment (noun)
an inward slant of the thigh	damage that results in a reduction of strength or quality
	the act of making something futile and useless (as by routine)
	the occurrence of a change for the worse
	the condition of being unable to perform as a consequence of physical or mental unfitness
	a symptom of reduced quality or strength