flinch vs cringe

flinch and cringe both are nouns.

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

As verbs, flinch and cringe are synonyms defined as:

Other synonyms of flinch include funk, quail, recoil, shrink, squinch, wince.

flinch (noun)	cringe (noun)
a reflex response to sudden pain	A posture or gesture of shrinking or recoiling.
	some event or object that causes embarrassment and shame

flinch (verb)	cringe (verb)
draw back, as with fear or pain	show submission or fear
	draw back, as with fear or pain