glow vs radiance

glow and radiance both are nouns.

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

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

Other hypernyms of glow include effulgence, radiancy, refulgence, refulgency, shine.

As nouns, glow and radiance are synonyms defined as:

glow and radiance: the amount of electromagnetic radiation leaving or arriving at a point on a surface

Other synonyms of glow include glowing.

glow (noun)	radiance (noun)
light from nonthermal sources	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 feeling of considerable warmth	an attractive combination of good health and happiness
the phenomenon of light emission by a body as its temperature is raised
the amount of electromagnetic radiation leaving or arriving at a point on a surface
a steady even light without flames
an alert and refreshed state

glow (verb)	radiance (verb)
experience a feeling of well-being or happiness, as from good health or an intense emotion
be exuberant or high-spirited
emit a steady even light without flames
have a complexion with a strong bright color, such as red or pink
shine intensely, as if with heat