cringe vs cower

cringe is a noun but cower is not a noun.

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

As verbs, cringe and cower are synonyms defined as:

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

cringe (noun)	cower (noun)
A posture or gesture of shrinking or recoiling.
some event or object that causes embarrassment and shame

cringe (verb)	cower (verb)
show submission or fear	show submission or fear
draw back, as with fear or pain	crouch or curl up