deformational vs deformation

deformational is not a noun while deformation is a noun.

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

deformational (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

deformational (adjective)	deformation (adjective)
relating to or causing change in either shape or size of a material body or geometric figure