cower vs crawl

cower is not a noun while crawl is a noun.

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

As verbs, cower and crawl are synonyms defined as:

Other synonyms of cower include creep, cringe, fawn, grovel.

cower (noun)	crawl (noun)
	a slow mode of locomotion on hands and knees or dragging the body
	a swimming stroke; arms are moved alternately overhead accompanied by a flutter kick
	a very slow movement

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