physical body vs chassis

physical body and chassis both are nouns.

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

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

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

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

physical 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