loafer vs bum

loafer and bum both are nouns.

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

As nouns, loafer and bum are synonyms defined as:

Other synonyms of loafer include do-nothing, idler, layabout.

loafer (noun)	bum (noun)
person who does no work	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

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

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