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luminousness vs illuminance

illuminance vs luminousness

luminousness and illuminance both are nouns.

Word NounAdjectiveVerbAdverb
luminousness Yes No No No
illuminance Yes No No No
As nouns, illuminance is a hyponym of luminousness; that is, illuminance is a word with a more specific, narrower meaning than luminousness:
  • luminousness: the quality of being luminous; emitting or reflecting light
  • illuminance: the luminous flux incident on a unit area
Other hyponyms of luminousness include illumination, incandescence, glow, luminescence.
luminousness (noun) illuminance (noun)
the quality of being luminous; emitting or reflecting light the luminous flux incident on a unit area
Difference between luminousness and illuminance

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