bow leg vs bandy leg

bow leg and bandy leg both are nouns.

Word	Noun	Adjective	Verb	Adverb
bow leg	Yes	No	No	No
bandy leg	Yes	No	No	No

As nouns, bow leg and bandy leg are synonyms defined as:

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

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

bow leg (noun)	bandy 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