stern vs rump

stern and rump both are nouns.

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

As nouns, stern and rump are synonyms defined as:

stern (noun)	rump (noun)
the rear part of a ship	the part of an animal that corresponds to the human buttocks
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

stern (adjective)	rump (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