rapaciousness vs predaciousness

rapaciousness and predaciousness both are nouns.

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

As nouns, rapaciousness and predaciousness are synonyms defined as:

rapaciousness and predaciousness: (of an animal, usually a bird) The quality of subsisting off live prey.

Other synonyms of rapaciousness include predaceousness, rapacity.

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