sufficiency vs wealthiness

sufficiency and wealthiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sufficiency	Yes	No	No	No
wealthiness	Yes	No	No	No

As nouns, wealthiness is a hypernym of sufficiency; that is, wealthiness is a word with a broader meaning than sufficiency:

sufficiency: sufficient resources to provide comfort and meet obligations
wealthiness: the state of being rich and affluent; having a plentiful supply of material goods and money

Other hypernyms of sufficiency include wealth.

sufficiency (noun)	wealthiness (noun)
the quality of being sufficient for the end in view	the state of being rich and affluent; having a plentiful supply of material goods and money
an adequate quantity; a quantity that is large enough to achieve a purpose
sufficient resources to provide comfort and meet obligations