Brightness
Brightness noun - The quality or state of having or giving off light.
Usage example: the brightness of the sunshine made me squint after an afternoon spent in a darkened movie theater
Light is a synonym for brightness in glow topic. In some cases you can use "Light" instead a noun "Brightness", when it comes to topics like lustre, shine, radiance.
Light
Light noun - The quality of being luminous; emitting or reflecting light.
Brightness is a synonym for light in glow topic. You can use "Brightness" instead a noun "Light", if it concerns topics such as lustre, radiance, illumination.
Mutual synonyms
Both words in one sentence
-
The New Nintendo 3DS has an ambient light sensor that can automatically adjust screen brightness depending on the amount of light in the environment for better battery use.
Source: Useful Notes / Nintendo 3DS -
Dragon Ball Z: Budokai Tenkaichi 2: low-ranking characters might glow faintly when summoning ki; high-ranking characters glow with intense brightness at all times, and even the simplest moves look like a fireworks display crashing into a laser light show.
Source: Power Glows -
However, the light during the nighttime never drops below full moon brightness, even after the update that gave the moon phases.
Source: Hollywood Darkness
Cite this Source
Light and Brightness. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/brightness/light
Brightness & Light. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/brightness/light>.
Light or Brightness. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/brightness/light.
Google Ngram Viewer shows how "brightness" and "light" have occurred on timeline