effulgence vs refulgence

effulgence and refulgence both are nouns.

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

As nouns, effulgence and refulgence are synonyms defined as:

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

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

effulgence (noun)	refulgence (noun)
the quality of being bright and sending out rays of light	the quality of being bright and sending out rays of light