baron vs millionaire

baron

noun
  • A person of great power in society, especially in business and politics. 

  • The male ruler of a barony. 

  • A male member of the lowest rank of English nobility (the equivalent rank in Scotland is lord). 

  • A prisoner who gains power and influence by lending or selling goods such as tobacco. 

  • Any of various nymphalid butterflies of the genus Euthalia. 

  • A baron of beef, a cut made up of a double sirloin. 

millionaire

noun
  • A person whose net worth is at or greater than one million units of the local currency; a multimillionaire. 

  • A person whose net worth is at or greater than one million units of the local currency, but less than two million. 

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