stern vs bum

stern and bum both are nouns.

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

As nouns, stern and bum are synonyms defined as:

stern (noun)	bum (noun)
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	a vagrant
	a person who is deemed to be despicable or contemptible
	person who does no work

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

stern (verb)	bum (verb)
	ask for and get free; be a parasite
	be lazy or idle