crowd together vs teem

crowd together and teem both are verbs.

Word	Noun	Adjective	Verb	Adverb
crowd together	No	No	Yes	No
teem	No	No	Yes	No

As verbs, teem is a hyponym of crowd together; that is, teem is a word with a more specific, narrower meaning than crowd together:

Other hyponyms of crowd together include mass, overcrowd, pour, pullulate, stream, swarm, herd, jam, mob, pack, pile, throng.

crowd together (verb)	teem (verb)
to gather together in large numbers	move in large numbers
	be teeming, be abuzz