crawler vs crawl

crawler and crawl both are nouns.

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

crawler (noun)	crawl (noun)
terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers	a slow mode of locomotion on hands and knees or dragging the body
a person who tries to please someone in order to gain a personal advantage	a swimming stroke; arms are moved alternately overhead accompanied by a flutter kick
a person who crawls or creeps along the ground	a very slow movement

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