hindquarters vs bum

hindquarters and bum both are nouns.

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

As nouns, hindquarters and bum are synonyms defined as:

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

hindquarters (adjective)	bum (adjective)
	of very poor quality; flimsy

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