scowl vs frown

scowl and frown both are nouns.

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

As nouns, scowl and frown are synonyms defined as:

As verbs, frown is a hypernym of scowl; that is, frown is a word with a broader meaning than scowl:

scowl: frown with displeasure
frown: look angry or sullen, wrinkle one's forehead, as if to signal disapproval

Other hypernyms of scowl include glower, lour, lower.

scowl (noun)	frown (noun)
a facial expression of dislike or displeasure	a facial expression of dislike or displeasure

scowl (verb)	frown (verb)
frown with displeasure	look angry or sullen, wrinkle one's forehead, as if to signal disapproval