excrement vs bum

excrement and bum both are nouns.

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

excrement (noun)	bum (noun)
waste matter (as urine or sweat but especially feces) discharged from the body	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

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

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