bodily structure vs body part

bodily structure and body part both are nouns.

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

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

bodily structure: a particular complex anatomical part of a living thing and its construction and arrangement
body part: any part of an organism such as an organ or extremity

bodily structure (noun)	body part (noun)
a particular complex anatomical part of a living thing and its construction and arrangement	any part of an organism such as an organ or extremity