grandee vs millionaire

grandee

noun
  • A high-ranking nobleman in Spain or Portugal. 

  • A person of high rank. 

millionaire

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

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

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