wealth vs wealthiness

wealth and wealthiness both are nouns.

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

As nouns, wealth and wealthiness are synonyms defined as:

wealth and wealthiness: the state of being rich and affluent; having a plentiful supply of material goods and money

wealth (noun)	wealthiness (noun)
the quality of profuse abundance	the state of being rich and affluent; having a plentiful supply of material goods and money
property that has economic utility: a monetary value or an exchange value
an abundance of material possessions and resources
the state of being rich and affluent; having a plentiful supply of material goods and money