rump vs stern

rump and stern both are nouns.

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

As nouns, rump and stern are synonyms defined as:

rump (noun)	stern (noun)
the part of an animal that corresponds to the human buttocks	the rear part of a ship
the fleshy part of the human body that you sit on	the fleshy part of the human body that you sit on
fleshy hindquarters; behind the loin and above the round

rump (adjective)	stern (adjective)
	severe and unremitting in making demands
	not to be placated or appeased or moved by entreaty
	of a stern or strict bearing or demeanor; forbidding in aspect
	severely simple