wince vs flinch

wince and flinch both are nouns.

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

As nouns, wince and flinch are synonyms defined as:

As verbs, wince and flinch are synonyms defined as:

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

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

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