brightness
(noun)
noun
1. the location of a visual perception along a continuum from black to white
Definition categories: attribute, light, lightness
2. intelligence as manifested in being quick and witty
Similar word(s): cleverness, smartness
Definition categories: thought, intelligence
3. the quality of being luminous; emitting or reflecting light
Similar word(s): light, luminance, luminosity, luminousness
Definition categories: attribute