radiancy vs polish

radiancy and polish both are nouns.

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

As nouns, polish is a hyponym of radiancy; that is, polish 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, gloss, glossiness.

radiancy (noun)	polish (noun)
the quality of being bright and sending out rays of light	the property of being smooth and shiny
	a highly developed state of perfection; having a flawless or impeccable quality
	a preparation used in polishing

radiancy (verb)	polish (verb)
	bring to a highly developed, finished, or refined state
	improve or perfect by pruning or polishing
	make (a surface) shine