radiance vs gleaming

radiance and gleaming both are nouns.

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

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

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

radiance (noun)	gleaming (noun)
the quality of being bright and sending out rays of light	an appearance of reflected light
the amount of electromagnetic radiation leaving or arriving at a point on a surface	a flash of light (especially reflected light)
an attractive combination of good health and happiness

radiance (adjective)	gleaming (adjective)
	bright with a steady but subdued shining