deform vs deformation

deform is not a noun while deformation is a noun.

Word	Noun	Adjective	Verb	Adverb
deform	No	No	Yes	No
deformation	Yes	No	No	No

deform (noun)	deformation (noun)
	the act of twisting or deforming the shape of something (e.g., yourself)
	a change for the worse
	alteration in the shape or dimensions of an object as a result of the application of stress to it

deform (verb)	deformation (verb)
become misshapen
alter the shape of (something) by stress
assume a different shape or form
make formless
cause (an object) to assume a crooked or angular form
twist and press out of shape