bodily structure vs complex body part

bodily structure and complex body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
bodily structure	Yes	No	No	No
complex body part	Yes	No	No	No

As nouns, bodily structure and complex body part are synonyms defined as:

bodily structure and complex body part: a particular complex anatomical part of a living thing and its construction and arrangement

Other synonyms of bodily structure include anatomical structure, body structure, structure.

bodily structure (noun)	complex body part (noun)
a particular complex anatomical part of a living thing and its construction and arrangement	a particular complex anatomical part of a living thing and its construction and arrangement