splurge vs flaunt

splurge and flaunt both are nouns.

Word	Noun	Adjective	Verb	Adverb
splurge	Yes	No	Yes	No
flaunt	Yes	No	Yes	No

As verbs, flaunt is a hypernym of splurge; that is, flaunt is a word with a broader meaning than splurge:

Other hypernyms of splurge include flash, ostentate, show off, swank.

splurge (noun)	flaunt (noun)
any act of immoderate indulgence	the act of displaying something ostentatiously
an ostentatious display (of effort or extravagance etc.)

splurge (verb)	flaunt (verb)
be showy or ostentatious	display proudly; act ostentatiously or pretentiously
indulge oneself