grimace vs squinch

grimace and squinch both are nouns.

Word	Noun	Adjective	Verb	Adverb
grimace	Yes	No	Yes	No
squinch	Yes	No	Yes	No

As verbs, squinch is a hyponym of grimace; that is, squinch is a word with a more specific, narrower meaning than grimace:

Other hyponyms of grimace include squint, wince, smile, frown, glower, lour, lower, screw up, mop, mow, pout.

grimace (noun)	squinch (noun)
a contorted facial expression	a small arch built across the interior angle of two walls (usually to support a spire)

grimace (verb)	squinch (verb)
contort the face to indicate a certain mental or emotional state	cross one's eyes as if in strabismus
	draw back, as with fear or pain
	crouch down