Angling the mask slightly upward is known as terasu, or “to make a happy face,” and angling the mask slightly downward is known as kumorasu, or “to make a sad face.” In Noh, an unmasked face is known as a “straight face” and the same terms are used when the unmasked face is similarly moved. Terasu literally means “to shine” and is used to communicate brighter emotions such as happiness, while kumorasu, which literally means “to cloud” is used to communicate emotions like sadness. However, the nuanced performances of the Noh actors communicate a range of lively emotions in addition to terasu and kumorasu.