orgy vs indulgence

orgy and indulgence both are nouns.

Word	Noun	Adjective	Verb	Adverb
orgy	Yes	No	No	No
indulgence	Yes	No	No	No

As nouns, indulgence is a hypernym of orgy; that is, indulgence is a word with a broader meaning than orgy:

Other hypernyms of orgy include humoring, humouring, indulging, pampering.

orgy (noun)	indulgence (noun)
secret rite in the cults of ancient Greek or Roman deities involving singing and dancing and drinking and sexual activity	the act of indulging or gratifying a desire
any act of immoderate indulgence	foolish or senseless behavior
a wild gathering involving excessive drinking and promiscuity	the remission by the pope of the temporal punishment in purgatory that is still due for sins even after absolution
	an inability to resist the gratification of whims and desires
	a disposition to yield to the wishes of someone