brilliance vs genius

brilliance and genius both are nouns.

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

As nouns, brilliance and genius are synonyms defined as:

brilliance (noun)	genius (noun)
a light within the field of vision that is brighter than the brightness to which the eyes are adapted	exceptional creative ability
the quality of being magnificent or splendid or grand	a natural talent
unusual mental ability	unusual mental ability
	someone who has exceptional intellectual ability and originality
	someone who is dazzlingly skilled in any field