profligacy vs prodigality

profligacy and prodigality both are nouns.

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

As nouns, profligacy and prodigality are synonyms defined as:

Other synonyms of profligacy include extravagance.

profligacy (noun)	prodigality (noun)
dissolute indulgence in sensual pleasure	the activity of excessive spending
the trait of spending extravagantly	the trait of spending extravagantly