glower vs frown

glower and frown both are nouns.

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

As verbs, glower and frown are synonyms defined as:

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

Other synonyms of glower include lour, lower.

glower (noun)	frown (noun)
an angry stare	a facial expression of dislike or displeasure

glower (verb)	frown (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