brilliant vs brilliance

brilliant is not a noun while brilliance is a noun.

Word	Noun	Adjective	Verb	Adverb
brilliant	No	Yes	No	No
brilliance	Yes	No	No	No

brilliant (noun)	brilliance (noun)
	a light within the field of vision that is brighter than the brightness to which the eyes are adapted
	the quality of being magnificent or splendid or grand
	unusual mental ability

brilliant (adjective)	brilliance (adjective)
full of light; shining intensely
having strong or striking color
characterized by grandeur
having or marked by unusual and impressive intelligence
clear and sharp and ringing
of surpassing excellence