misshapenness vs deformity

misshapenness and deformity both are nouns.

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

As nouns, misshapenness and deformity are synonyms defined as:

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

Other synonyms of misshapenness include malformation.

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