concha vs body structure

concha and body structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
concha	Yes	No	No	No
body structure	Yes	No	No	No

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

concha: (anatomy) a structure that resembles a shell in shape
body structure: a particular complex anatomical part of a living thing and its construction and arrangement

Other hypernyms of concha include anatomical structure, bodily structure, complex body part, structure.

concha (noun)	body structure (noun)
(anatomy) a structure that resembles a shell in shape	a particular complex anatomical part of a living thing and its construction and arrangement