gyrus vs complex body part

gyrus and complex body part both are nouns.

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

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

gyrus: a convex fold or elevation in the surface of the brain
complex body part: a particular complex anatomical part of a living thing and its construction and arrangement

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

gyrus (noun)	complex body part (noun)
a convex fold or elevation in the surface of the brain	a particular complex anatomical part of a living thing and its construction and arrangement