carina vs complex body part

carina and complex body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
carina	Yes	No	No	No
complex body part	Yes	No	No	No

As nouns, complex body part is a hypernym of carina; that is, complex body part is a word with a broader meaning than carina:

carina: any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom
complex body part: a particular complex anatomical part of a living thing and its construction and arrangement

Other hypernyms of carina include anatomical structure, bodily structure, body structure, structure.

carina (noun)	complex body part (noun)
any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom	a particular complex anatomical part of a living thing and its construction and arrangement