glossiness vs radiance

glossiness and radiance both are nouns.

Word	Noun	Adjective	Verb	Adverb
glossiness	Yes	No	No	No
radiance	Yes	No	No	No

As nouns, radiance is a hypernym of glossiness; that is, radiance is a word with a broader meaning than glossiness:

Other hypernyms of glossiness include smoothness, effulgence, radiancy, refulgence, refulgency, shine.

glossiness (noun)	radiance (noun)
the property of being smooth and shiny	the quality of being bright and sending out rays of light
	the amount of electromagnetic radiation leaving or arriving at a point on a surface
	an attractive combination of good health and happiness