excess vs indulging

excess and indulging both are nouns.

Word	Noun	Adjective	Verb	Adverb
excess	Yes	Yes	No	No
indulging	Yes	No	No	No

As nouns, indulging is a hypernym of excess; that is, indulging is a word with a broader meaning than excess:

Other hypernyms of excess include humoring, humouring, indulgence, pampering.

excess (noun)	indulging (noun)
excessive indulgence	the act of indulging or gratifying a desire
immoderation as a consequence of going beyond sufficient or permitted limits
a quantity much larger than is needed
the state of being more than full

excess (adjective)	indulging (adjective)
more than is needed, desired, or required