anatomy vs physical body

anatomy and physical body both are nouns.

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

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

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

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

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