limbus vs complex body part

limbus and complex body part both are nouns.

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

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

limbus: a border or edge of any of various body parts distinguished by color or structure
complex body part: a particular complex anatomical part of a living thing and its construction and arrangement

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

limbus (noun)	complex body part (noun)
a border or edge of any of various body parts distinguished by color or structure	a particular complex anatomical part of a living thing and its construction and arrangement