bulge vs snag

bulge and snag both are nouns.

Word	Noun	Adjective	Verb	Adverb
bulge	Yes	No	Yes	No
snag	Yes	No	Yes	No

As nouns, snag is a hyponym of bulge; that is, snag is a word with a more specific, narrower meaning than bulge:

bulge: something that bulges out or is protuberant or projects from its surroundings
snag: a sharp protuberance

Other hyponyms of bulge include frontal eminence, occipital protuberance, belly, caput, mogul, nub, nubble, wart.

bulge (noun)	snag (noun)
something that bulges out or is protuberant or projects from its surroundings	an unforeseen obstacle
	an opening made forcibly as by pulling apart
	a dead tree that is still standing, usually in an undisturbed forest
	a sharp protuberance

bulge (verb)	snag (verb)
swell or protrude outwards	catch on a snag
cause to bulge or swell outwards	hew jaggedly
bulge outward	get by acting quickly and smartly
bulge out; form a bulge outward, or be so full as to appear to bulge