distortion vs deformation

distortion and deformation both are nouns.

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

As nouns, distortion and deformation are synonyms defined as:

distortion (noun)	deformation (noun)
the act of distorting something so it seems to mean something it was not intended to mean	the act of twisting or deforming the shape of something (e.g., yourself)
the mistake of misrepresenting the facts	a change for the worse
a change for the worse	alteration in the shape or dimensions of an object as a result of the application of stress to it
an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
a change (usually undesired) in the waveform of an acoustic or analog electrical signal; the difference between two measurements of a signal (as between the input and output signal)
a shape resulting from distortion