deformity vs malformation

deformity and malformation both are nouns.

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

As nouns, deformity and malformation are synonyms defined as:

deformity and malformation: an affliction in which some part of the body is misshapen or malformed

Other synonyms of deformity include misshapenness.

deformity (noun)	malformation (noun)
an appearance that has been spoiled or is misshapen	something abnormal or anomalous
an affliction in which some part of the body is misshapen or malformed	an affliction in which some part of the body is misshapen or malformed