bum vs colloquialism

bum and colloquialism both are nouns.

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

bum (noun)	colloquialism (noun)
the fleshy part of the human body that you sit on	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
a vagrant
a person who is deemed to be despicable or contemptible
person who does no work

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

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