indulgence vs indulge

indulgence is a noun but indulge is not a noun.

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

indulgence (noun)	indulge (noun)
the act of indulging or gratifying a desire
foolish or senseless behavior
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

indulgence (verb)	indulge (verb)
	yield (to); give satisfaction to
	enjoy to excess
	treat with excessive indulgence
	give free rein to