plenitude vs plenty

plenitude and plenty both are nouns.

Word	Noun	Adjective	Verb	Adverb
plenitude	Yes	No	No	No
plenty	Yes	No	No	Yes

As nouns, plenitude and plenty are synonyms defined as:

Other synonyms of plenitude include plenteousness, plentifulness, plentitude.

plenitude (noun)	plenty (noun)
a full supply	a full supply
	(often followed by `of') a large number or amount or extent

plenitude (adverb)	plenty (adverb)
	as much as necessary