affluent vs prosperous

affluent

adj
  • Abounding in goods or riches; having a moderate level of material wealth. 

  • Abundant; copious; plenteous. 

  • The Upper East Side is an affluent neighborhood in New York City. 

noun
  • A stream or river flowing into a larger river or into a lake; a tributary stream; a tributary. 

  • Somebody who is wealthy. 

prosperous

adj
  • Well off; affluent. 

  • Characterized by success. 

  • Favorable. 

How often have the words affluent and prosperous occurred in a corpus of books? (source: Google Ngram Viewer )