pull a face vs lour

pull a face and lour both are verbs.

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

As verbs, lour is a hyponym of pull a face; that is, lour 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
lour: 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, lower, screw up, mop, mow, pout.

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