lour vs pull a face

lour and pull a face both are verbs.

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

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

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

Other hypernyms of lour include grimace, make a face.

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