varus vs deformity

varus and deformity both are nouns.

Word	Noun	Adjective	Verb	Adverb
varus	Yes	No	No	No
deformity	Yes	No	No	No

As nouns, deformity is a hypernym of varus; that is, deformity is a word with a broader meaning than varus:

varus: a deformity in which part of a limb is turned inward to an abnormal degree
deformity: an affliction in which some part of the body is misshapen or malformed

Other hypernyms of varus include malformation, misshapenness.

varus (noun)	deformity (noun)
a deformity in which part of a limb is turned inward to an abnormal degree	an appearance that has been spoiled or is misshapen
	an affliction in which some part of the body is misshapen or malformed