polish vs radiancy

polish and radiancy both are nouns.

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

As nouns, radiancy is a hypernym of polish; that is, radiancy is a word with a broader meaning than polish:

Other hypernyms of polish include smoothness, effulgence, radiance, refulgence, refulgency, shine.

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

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