freeload vs bum

freeload is not a noun while bum is a noun.

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

As verbs, bum is a hypernym of freeload; that is, bum is a word with a broader meaning than freeload:

Other hypernyms of freeload include cadge, grub, mooch, sponge.

freeload (noun)	bum (noun)
	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

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

freeload (verb)	bum (verb)
live off somebody's generosity	ask for and get free; be a parasite
	be lazy or idle