effulgence vs gleaming

effulgence and gleaming both are nouns.

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

As nouns, gleaming is a hyponym of effulgence; that is, gleaming is a word with a more specific, narrower meaning than effulgence:

Other hyponyms of effulgence include gleam, glow, lambency, luster, lustre, sheen, shininess, burnish, gloss, glossiness, polish.

effulgence (noun)	gleaming (noun)
the quality of being bright and sending out rays of light	an appearance of reflected light
	a flash of light (especially reflected light)

effulgence (adjective)	gleaming (adjective)
	bright with a steady but subdued shining