dilly-dallier vs bum

dilly-dallier and bum both are nouns.

Word	Noun	Adjective	Verb	Adverb
dilly-dallier	Yes	No	No	No
bum	Yes	Yes	Yes	No

As nouns, bum is a hypernym of dilly-dallier; that is, bum is a word with a broader meaning than dilly-dallier:

Other hypernyms of dilly-dallier include do-nothing, idler, layabout, loafer.

dilly-dallier (noun)	bum (noun)
someone who wastes time	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

dilly-dallier (adjective)	bum (adjective)
	of very poor quality; flimsy

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