swarm vs crawl

swarm and crawl both are nouns.

Word	Noun	Adjective	Verb	Adverb
swarm	Yes	No	Yes	No
crawl	Yes	No	Yes	No

As verbs, crawl is a hyponym of swarm; that is, crawl is a word with a more specific, narrower meaning than swarm:

swarm (noun)	crawl (noun)
a group of many things in the air or on the ground	a slow mode of locomotion on hands and knees or dragging the body
a moving crowd	a swimming stroke; arms are moved alternately overhead accompanied by a flutter kick
	a very slow movement

swarm (verb)	crawl (verb)
move in large numbers	move slowly; in the case of people or animals with the body near the ground
be teeming, be abuzz	swim by doing the crawl
	show submission or fear
	be full of
	feel as if crawling with insects