crawl vs swarm

crawl and swarm both are nouns.

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

As verbs, swarm is a hypernym of crawl; that is, swarm is a word with a broader meaning than crawl:

Other hypernyms of crawl include pullulate, teem.

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

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