rump vs body part

rump and body part both are nouns.

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

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

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

rump (noun)	body part (noun)
the part of an animal that corresponds to the human buttocks	any part of an organism such as an organ or extremity
the fleshy part of the human body that you sit on
fleshy hindquarters; behind the loin and above the round