flinch vs wince

flinch and wince both are nouns.

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

As nouns, flinch and wince are synonyms defined as:

As verbs, flinch and wince are synonyms defined as:

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

flinch (noun)	wince (noun)
a reflex response to sudden pain	a reflex response to sudden pain
	the facial expression of sudden pain

flinch (verb)	wince (verb)
draw back, as with fear or pain	make a face indicating disgust or dislike
	draw back, as with fear or pain