anatomy vs organic structure

anatomy and organic structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
anatomy	Yes	No	No	No
organic structure	Yes	No	No	No

As nouns, organic structure is a hypernym of anatomy; that is, organic structure is a word with a broader meaning than anatomy:

anatomy: alternative names for the body of a human being
organic structure: the entire physical structure of an organism (an animal, plant, or human being)

Other hypernyms of anatomy include body.

anatomy (noun)	organic structure (noun)
a detailed analysis	the entire physical structure of an organism (an animal, plant, or human being)
alternative names for the body of a human being
the branch of morphology that deals with the structure of animals