opulence vs wealth

opulence and wealth both are nouns.

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

As nouns, wealth is a hypernym of opulence; that is, wealth is a word with a broader meaning than opulence:

opulence: wealth as evidenced by sumptuous living
wealth: the state of being rich and affluent; having a plentiful supply of material goods and money

Other hypernyms of opulence include wealthiness.

opulence (noun)	wealth (noun)
wealth as evidenced by sumptuous living	the quality of profuse abundance
	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