cut of beef vs rump

cut of beef and rump both are nouns.

Word	Noun	Adjective	Verb	Adverb
cut of beef	Yes	No	No	No
rump	Yes	No	No	No

As nouns, rump is a hyponym of cut of beef; that is, rump is a word with a more specific, narrower meaning than cut of beef:

cut of beef (noun)	rump (noun)
cut of meat from beef cattle	the part of an animal that corresponds to the human buttocks
	the fleshy part of the human body that you sit on
	fleshy hindquarters; behind the loin and above the round