distortion vs distorted shape

distortion and distorted shape both are nouns.

Word	Noun	Adjective	Verb	Adverb
distortion	Yes	No	No	No
distorted shape	Yes	No	No	No

As nouns, distortion and distorted shape are synonyms defined as:

distortion (noun)	distorted shape (noun)
the act of distorting something so it seems to mean something it was not intended to mean	a shape resulting from distortion
the mistake of misrepresenting the facts
a change for the worse
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