chassis vs human body

chassis and human body both are nouns.

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

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

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

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