bounty vs bounteousness

bounty and bounteousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
bounty	Yes	No	No	No
bounteousness	Yes	No	No	No

As nouns, bounty and bounteousness are synonyms defined as:

bounty and bounteousness: (literary) generosity evidenced by a willingness to give freely

bounty (noun)	bounteousness (noun)
(literary) generosity evidenced by a willingness to give freely	(literary) generosity evidenced by a willingness to give freely
the property of copious abundance
payment or reward (especially from a government) for acts such as catching criminals or killing predatory animals or enlisting in the military