extravagance vs profligacy

extravagance and profligacy both are nouns.

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

As nouns, extravagance and profligacy are synonyms defined as:

Other synonyms of extravagance include prodigality.

extravagance (noun)	profligacy (noun)
the activity of excessive spending	dissolute indulgence in sensual pleasure
the trait of spending extravagantly	the trait of spending extravagantly
the quality of exceeding the appropriate limits of decorum or probability or truth