lightness vs gloriole

lightness and gloriole both are nouns.

Word	Noun	Adjective	Verb	Adverb
lightness	Yes	No	No	No
gloriole	Yes	No	No	No

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

lightness: the visual effect of illumination on objects or scenes as created in pictures
gloriole: an indication of radiant light drawn around the head of a saint

Other hyponyms of lightness include aura, aureole, glory, halo, nimbus, sunniness, highlight, highlighting, brightness.

lightness (noun)	gloriole (noun)
the trait of being lighthearted and frivolous	an indication of radiant light drawn around the head of a saint
the visual effect of illumination on objects or scenes as created in pictures
the property of being comparatively small in weight
having a light color
the gracefulness of a person or animal that is quick and nimble
a feeling of joy and pride