luminosity vs luminance

luminosity and luminance both are nouns.

Word	Noun	Adjective	Verb	Adverb
luminosity	Yes	No	No	No
luminance	Yes	No	No	No

As nouns, luminosity and luminance are synonyms defined as:

luminosity and luminance: the quality of being luminous; emitting or reflecting light

Other synonyms of luminosity include brightness, brightness level, light, luminousness.

luminosity (noun)	luminance (noun)
the quality of being luminous; emitting or reflecting light	the quality of being luminous; emitting or reflecting light