rapacity vs rapaciousness

rapacity and rapaciousness both are nouns.

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

As nouns, rapacity and rapaciousness are synonyms defined as:

Other synonyms of rapacity include edacity, esurience, voraciousness, voracity.

As nouns, rapacity and rapaciousness are synonyms defined as:

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

Other synonyms of rapacity include predaceousness, predaciousness.

rapacity (noun)	rapaciousness (noun)
reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins)	extreme gluttony
extreme gluttony	an excessive desire for wealth (usually in large amounts)
(of an animal, usually a bird) The quality of subsisting off live prey.	(of an animal, usually a bird) The quality of subsisting off live prey.