radiancy vs gloss

radiancy and gloss both are nouns.

Word	Noun	Adjective	Verb	Adverb
radiancy	Yes	No	No	No
gloss	Yes	No	Yes	No

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

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

radiancy (noun)	gloss (noun)
the quality of being bright and sending out rays of light	the property of being smooth and shiny
	an outward or token appearance or form that is deliberately misleading
	an explanation or definition of an obscure word in a text
	an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field

radiancy (verb)	gloss (verb)
	provide an interlinear translation of a word or phrase
	provide interlinear explanations for words or phrases
	give a deceptive explanation or excuse for
	give a shine or gloss to, usually by rubbing