person vs chassis

person and chassis both are nouns.

Word	Noun	Adjective	Verb	Adverb
person	Yes	No	No	No
chassis	Yes	No	No	No

As nouns, chassis is a hypernym of person; that is, chassis is a word with a broader meaning than person:

person (noun)	chassis (noun)
a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential	the skeleton of a motor vehicle consisting of a steel frame supported on springs that holds the body and motor
a human body (usually including the clothing)	a metal mounting for the circuit components of an electronic device
a grammatical category used in the classification of pronouns, possessive determiners, and verb forms according to whether they indicate the speaker, the addressee, or a third party	alternative names for the body of a human being