hang-up vs snag

hang-up and snag both are nouns.

Word	Noun	Adjective	Verb	Adverb
hang-up	Yes	No	No	No
snag	Yes	No	Yes	No

As nouns, hang-up and snag are synonyms defined as:

Other synonyms of hang-up include hitch, rub.

hang-up (noun)	snag (noun)
an unforeseen obstacle	an unforeseen obstacle
an emotional preoccupation	an opening made forcibly as by pulling apart
	a dead tree that is still standing, usually in an undisturbed forest
	a sharp protuberance

hang-up (verb)	snag (verb)
	catch on a snag
	hew jaggedly
	get by acting quickly and smartly