human body vs flesh

human body and flesh both are nouns.

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

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

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

human body (noun)	flesh (noun)
alternative names for the body of a human being	alternative names for the body of a human being
	the soft tissue of the body of a vertebrate: mainly muscle tissue and fat
	a soft moist part of a fruit

human body (verb)	flesh (verb)
	remove adhering flesh from (hides) when preparing leather manufacture