greediness vs rapaciousness

greediness and rapaciousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
greediness	Yes	No	No	No
rapaciousness	Yes	No	No	No

As nouns, greediness and rapaciousness are synonyms defined as:

greediness and rapaciousness: an excessive desire for wealth (usually in large amounts)

Other synonyms of greediness include voraciousness.

greediness (noun)	rapaciousness (noun)
an excessive desire for wealth (usually in large amounts)	extreme gluttony
an excessive desire for food	an excessive desire for wealth (usually in large amounts)
	(of an animal, usually a bird) The quality of subsisting off live prey.