fat cat vs new money

fat cat

noun
  • Any affluent person who is perceived to have profited from the labour of others. 

  • A rich person who contributes to a political campaign. 

  • Used other than figuratively or idiomatically: see fat, cat. 

new money

noun
  • Persons or families that have recently become wealthy. 

  • The decimal monetary system used in the United Kingdom since 1971. 

  • The metric system of measurement, as opposed to the imperial system. 

How often have the words fat cat and new money occurred in a corpus of books? (source: Google Ngram Viewer )