bum vs do-nothing

bum and do-nothing both are nouns.

Word	Noun	Adjective	Verb	Adverb
bum	Yes	Yes	Yes	No
do-nothing	Yes	Yes	No	No

As nouns, bum and do-nothing are synonyms defined as:

Other synonyms of bum include idler, layabout, loafer.

bum (noun)	do-nothing (noun)
the fleshy part of the human body that you sit on	person who does no work
a vagrant
a person who is deemed to be despicable or contemptible
person who does no work

bum (adjective)	do-nothing (adjective)
of very poor quality; flimsy	characterized by inability or unwillingness to work toward a goal or assume responsibility

bum (verb)	do-nothing (verb)
ask for and get free; be a parasite
be lazy or idle