squinch vs pull a face

squinch is a noun but pull a face is not a noun.

Word	Noun	Adjective	Verb	Adverb
squinch	Yes	No	Yes	No
pull a face	No	No	Yes	No

As verbs, pull a face is a hypernym of squinch; that is, pull a face is a word with a broader meaning than squinch:

squinch: cross one's eyes as if in strabismus
pull a face: contort the face to indicate a certain mental or emotional state

Other hypernyms of squinch include grimace, make a face.

squinch (noun)	pull a face (noun)
a small arch built across the interior angle of two walls (usually to support a spire)

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