material body vs chassis

material body and chassis both are nouns.

Word	Noun	Adjective	Verb	Adverb
material body	Yes	No	No	No
chassis	Yes	No	No	No

As nouns, material body and chassis are synonyms defined as:

material body and chassis: alternative names for the body of a human being

Other synonyms of material body include anatomy, bod, build, figure, flesh, form, frame, human body, physical body, physique, shape, soma.

material body (noun)	chassis (noun)
alternative names for the body of a human being	the skeleton of a motor vehicle consisting of a steel frame supported on springs that holds the body and motor
	a metal mounting for the circuit components of an electronic device
	alternative names for the body of a human being