effulgence vs radiance

effulgence and radiance both are nouns.

Word	Noun	Adjective	Verb	Adverb
effulgence	Yes	No	No	No
radiance	Yes	No	No	No

As nouns, effulgence and radiance are synonyms defined as:

effulgence and radiance: the quality of being bright and sending out rays of light

Other synonyms of effulgence include radiancy, refulgence, refulgency, shine.

effulgence (noun)	radiance (noun)
the quality of being bright and sending out rays of light	the quality of being bright and sending out rays of light
	the amount of electromagnetic radiation leaving or arriving at a point on a surface
	an attractive combination of good health and happiness