brilliance vs magnificence

brilliance and magnificence both are nouns.

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

As nouns, brilliance and magnificence are synonyms defined as:

brilliance and magnificence: the quality of being magnificent or splendid or grand

Other synonyms of brilliance include grandeur, grandness, splendor, splendour.

brilliance (noun)	magnificence (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
the quality of being magnificent or splendid or grand	splendid or imposing in size or appearance
unusual mental ability