coruscation vs brilliance

coruscation and brilliance both are nouns.

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

As nouns, brilliance is a hypernym of coruscation; that is, brilliance is a word with a broader meaning than coruscation:

Other hypernyms of coruscation include genius.

coruscation (noun)	brilliance (noun)
a sudden or striking display of brilliance	a light within the field of vision that is brighter than the brightness to which the eyes are adapted
the occurrence of a small flash or spark	the quality of being magnificent or splendid or grand
	unusual mental ability