As an adjective luminous
is emitting light; glowing brightly.
As a noun brilliance is
the quality of being exceptionally effulgent (giving off light).
luminous
Adjective
(
en adjective)
emitting light; glowing brightly
brightly illuminated
Synonyms
* beamful
Derived terms
* luminous paint
* luminosity
brilliance
Noun
(en-noun)
The quality of being exceptionally effulgent (giving off light).
The quality of having extraordinary mental capacity.
Magnificence; resplendence.
Derived terms
* brilliancy
Related terms
* brilliant
* brilliantly
* brilliantness