complex body part vs bodily structure

complex body part and bodily structure both are nouns.

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

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

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

Other synonyms of complex body part include anatomical structure, body structure, structure.

complex body part (noun)	bodily structure (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