Brightness
Part of speech: noun
Definition: the quality of being bright the perception elicited by the luminance of an object intelligence, cleverness
Example sentence: The greatest miracle of all time, without any close seconds, is the universe. It is the miracle of all miracles, one that ineluctably points with the combined brightness of every star to something - or Someone - beyond itself.
Smartness
Part of speech: noun
Definition: The state or quality of being smart.The result or product of being smart.