radiance vs healthiness

radiance and healthiness both are nouns.

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

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

radiance: an attractive combination of good health and happiness
healthiness: the state of being vigorous and free from bodily or mental disease

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

radiance (noun)	healthiness (noun)
the quality of being bright and sending out rays of light	the state of being vigorous and free from bodily or mental disease
the amount of electromagnetic radiation leaving or arriving at a point on a surface
an attractive combination of good health and happiness