cornu vs anatomical structure

cornu and anatomical structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
cornu	Yes	No	No	No
anatomical structure	Yes	No	No	No

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

cornu: (anatomy) any structure that resembles a horn in shape
anatomical structure: a particular complex anatomical part of a living thing and its construction and arrangement

Other hypernyms of cornu include bodily structure, body structure, complex body part, structure.

cornu (noun)	anatomical structure (noun)
(anatomy) any structure that resembles a horn in shape	a particular complex anatomical part of a living thing and its construction and arrangement