adnexa vs body part

adnexa and body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
adnexa	Yes	No	No	No
body part	Yes	No	No	No

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

adnexa: accessory or adjoining anatomical parts or appendages to an organ (especially of the embryo)
body part: any part of an organism such as an organ or extremity

adnexa (noun)	body part (noun)
accessory or adjoining anatomical parts or appendages to an organ (especially of the embryo)	any part of an organism such as an organ or extremity