quadruped vs rump

quadruped and rump both are nouns.

Word	Noun	Adjective	Verb	Adverb
quadruped	Yes	Yes	No	No
rump	Yes	No	No	No

quadruped (noun)	rump (noun)
an animal especially a mammal having four limbs specialized for walking	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

quadruped (adjective)	rump (adjective)
having four feet