human body vs anatomy

human body and anatomy both are nouns.

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

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

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

human body (noun)	anatomy (noun)
alternative names for the body of a human being	a detailed analysis
	alternative names for the body of a human being
	the branch of morphology that deals with the structure of animals