extravagance vs dissipation

extravagance and dissipation both are nouns.

Word	Noun	Adjective	Verb	Adverb
extravagance	Yes	No	No	No
dissipation	Yes	No	No	No

As nouns, dissipation is a hypernym of extravagance; that is, dissipation is a word with a broader meaning than extravagance:

extravagance: the activity of excessive spending
dissipation: useless or profitless activity; using or expending or consuming thoughtlessly or carelessly

Other hypernyms of extravagance include waste, wastefulness.

extravagance (noun)	dissipation (noun)
the activity of excessive spending	dissolute indulgence in sensual pleasure
the trait of spending extravagantly	useless or profitless activity; using or expending or consuming thoughtlessly or carelessly
the quality of exceeding the appropriate limits of decorum or probability or truth	breaking up and scattering by dispersion