pull a face vs lower

pull a face is not a noun while lower is a noun.

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

As verbs, lower is a hyponym of pull a face; that is, lower is a word with a more specific, narrower meaning than pull a face:

pull a face: contort the face to indicate a certain mental or emotional state
lower: look angry or sullen, wrinkle one's forehead, as if to signal disapproval

Other hyponyms of pull a face include squinch, squint, wince, smile, frown, glower, lour, screw up, mop, mow, pout.

pull a face (noun)	lower (noun)
	the lower of two berths

pull a face (adjective)	lower (adjective)
	the bottom one of two

pull a face (verb)	lower (verb)
contort the face to indicate a certain mental or emotional state	make lower or quieter
	set lower
	cause to drop or sink
	move something or somebody to a lower position
	look angry or sullen, wrinkle one's forehead, as if to signal disapproval