affluent vs rich

affluent

adj
  • Abundant; copious; plenteous. 

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

  • 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. 

rich

adj
  • Plentiful, abounding, abundant, fulfilling. 

  • Of a solute-solvent solution: not weak (not diluted); of strong concentration. 

  • Ridiculous, absurd, outrageous, preposterous, especially in a galling, hypocritical, or brazen way. 

  • Elaborate, having complex formatting, multimedia, or depth of interaction. 

  • Having an intense fatty or sugary flavour. 

  • Very amusing. 

  • Of a fuel-air mixture: having more fuel (thus less air) than is necessary to burn all of the fuel; less air- or oxygen- rich than necessary for a stoichiometric reaction. 

  • Wealthy: having a lot of money and possessions. 

  • Yielding large returns; productive or fertile; fruitful. 

  • Trading at a price level which is high relative to historical trends, a similar asset, or (for derivatives) a theoretical value. 

  • Composed of valuable or costly materials or ingredients; procured at great outlay; highly valued; precious; sumptuous; costly. 

  • Remunerative. 

  • Not faint or delicate; vivid. 

noun
  • The rich people of a society or the world collectively, the rich class of a society. 

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