glower vs lour

glower is a noun but lour is not a noun.

Word	Noun	Adjective	Verb	Adverb
glower	Yes	No	Yes	No
lour	No	No	Yes	No

As verbs, glower and lour are synonyms defined as:

glower and lour: look angry or sullen, wrinkle one's forehead, as if to signal disapproval

Other synonyms of glower include frown, lower.

glower (noun)	lour (noun)
an angry stare

glower (verb)	lour (verb)
look angry or sullen, wrinkle one's forehead, as if to signal disapproval	look angry or sullen, wrinkle one's forehead, as if to signal disapproval
look at with a fixed gaze	make lower or quieter
	set lower