radiancy vs burnish

radiancy and burnish both are nouns.

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

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

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

radiancy (noun)	burnish (noun)
the quality of being bright and sending out rays of light	the property of being smooth and shiny

radiancy (verb)	burnish (verb)
	polish and make shiny