rapaciousness vs gluttony

rapaciousness and gluttony both are nouns.

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

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

rapaciousness (noun)	gluttony (noun)
extreme gluttony	eating to excess (personified as one of the deadly sins)
an excessive desire for wealth (usually in large amounts)	habitual eating to excess
(of an animal, usually a bird) The quality of subsisting off live prey.