refulgency vs sheen

refulgency and sheen both are nouns.

Word	Noun	Adjective	Verb	Adverb
refulgency	Yes	No	No	No
sheen	Yes	No	No	No

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

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

refulgency (noun)	sheen (noun)
the quality of being bright and sending out rays of light	the visual property of something that shines with reflected light