uvea vs body structure

uvea and body structure both are nouns.

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

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

uvea: the part of the eye that contains the iris and ciliary body and choroid
body structure: a particular complex anatomical part of a living thing and its construction and arrangement

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

uvea (noun)	body structure (noun)
the part of the eye that contains the iris and ciliary body and choroid	a particular complex anatomical part of a living thing and its construction and arrangement