genu varum vs tibia vara

genu varum and tibia vara both are nouns.

Word	Noun	Adjective	Verb	Adverb
genu varum	Yes	No	No	No
tibia vara	Yes	No	No	No

As nouns, genu varum and tibia vara are synonyms defined as:

genu varum and tibia vara: a leg bowed outward at the knee (or below the knee)

Other synonyms of genu varum include bandy leg, bandyleg, bow leg, bowleg.

genu varum (noun)	tibia vara (noun)
a leg bowed outward at the knee (or below the knee)	a leg bowed outward at the knee (or below the knee)