rapaciousness vs selfishness

rapaciousness and selfishness both are nouns.

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

As nouns, selfishness is a hypernym of rapaciousness; that is, selfishness is a word with a broader meaning than rapaciousness:

rapaciousness: an excessive desire for wealth (usually in large amounts)
selfishness: stinginess resulting from a concern for your own welfare and a disregard of others

rapaciousness (noun)	selfishness (noun)
extreme gluttony	stinginess resulting from a concern for your own welfare and a disregard of others
an excessive desire for wealth (usually in large amounts)
(of an animal, usually a bird) The quality of subsisting off live prey.