luminosity vs brightness level

luminosity and brightness level both are nouns.

Word	Noun	Adjective	Verb	Adverb
luminosity	Yes	No	No	No
brightness level	Yes	No	No	No

As nouns, luminosity and brightness level are synonyms defined as:

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

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

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