bounty vs bountifulness

bounty and bountifulness both are nouns.

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

As nouns, bounty and bountifulness are synonyms defined as:

Other synonyms of bounty include amplitude.

bounty (noun)	bountifulness (noun)
(literary) generosity evidenced by a willingness to give freely	the property of copious abundance
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