niggardliness vs parsimony

niggardliness and parsimony both are nouns.

Word	Noun	Adjective	Verb	Adverb
niggardliness	Yes	No	No	No
parsimony	Yes	No	No	No

As nouns, niggardliness and parsimony are synonyms defined as:

Other synonyms of niggardliness include closeness, meanness, minginess, niggardness, parsimoniousness, tightfistedness, tightness.

niggardliness (noun)	parsimony (noun)
extreme stinginess	extreme care in spending money; reluctance to spend money unnecessarily
	extreme stinginess