Frown
Part of speech: noun
Definition: A facial expression in which the eyebrows are brought together, and the forehead is wrinkled, usually indicating displeasure or worry.
Part of speech: verb
Definition: To have a frown on one's face.
Example sentence: Why should we strive, with cynic frown, to knock their fairy castles down?
Scowl
Part of speech: noun
Definition: The wrinkling of the brows or face in frowning; the expression of displeasure, sullenness, or discontent in the countenance; an angry frown.Hence, gloom; dark or threatening aspect.
Part of speech: verb
Definition: To wrinkle the brows, as in frowning or displeasure; to put on a frowning look; to look sour, sullen, severe, or angry.Hence, to look gloomy, dark, or threatening; to lower.To look at or repel with a scowl or a frown.To express by a scowl; as, to scowl defiance.