profligacy vs improvidence

profligacy and improvidence both are nouns.

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

As nouns, improvidence is a hypernym of profligacy; that is, improvidence is a word with a broader meaning than profligacy:

profligacy: the trait of spending extravagantly
improvidence: a lack of prudence and care by someone in the management of resources

Other hypernyms of profligacy include shortsightedness.

profligacy (noun)	improvidence (noun)
dissolute indulgence in sensual pleasure	a lack of prudence and care by someone in the management of resources
the trait of spending extravagantly