radiance vs happiness

radiance and happiness both are nouns.

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

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

radiance: an attractive combination of good health and happiness
happiness: state of well-being characterized by emotions ranging from contentment to intense joy

Other hypernyms of radiance include felicity, good health, healthiness.

radiance (noun)	happiness (noun)
the quality of being bright and sending out rays of light	emotions experienced when in a state of well-being
the amount of electromagnetic radiation leaving or arriving at a point on a surface	state of well-being characterized by emotions ranging from contentment to intense joy
an attractive combination of good health and happiness