tibia vara vs bow leg

tibia vara and bow leg both are nouns.

Word	Noun	Adjective	Verb	Adverb
tibia vara	Yes	No	No	No
bow leg	Yes	No	No	No

As nouns, tibia vara and bow leg are synonyms defined as:

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

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

tibia vara (noun)	bow leg (noun)
a leg bowed outward at the knee (or below the knee)	a leg bowed outward at the knee (or below the knee)
	outward curvature of the legs