parsimoniousness vs frugality

parsimoniousness and frugality both are nouns.

Word	Noun	Adjective	Verb	Adverb
parsimoniousness	Yes	No	No	No
frugality	Yes	No	No	No

As nouns, frugality is a hypernym of parsimoniousness; that is, frugality is a word with a broader meaning than parsimoniousness:

parsimoniousness: extreme care in spending money; reluctance to spend money unnecessarily
frugality: prudence in avoiding waste

Other hypernyms of parsimoniousness include frugalness.

parsimoniousness (noun)	frugality (noun)
extreme care in spending money; reluctance to spend money unnecessarily	prudence in avoiding waste
extreme stinginess