Croesus vs nouveau riche

Croesus

noun
  • A rich person. 

name
  • A male given name from Ancient Greek. 

  • A king of Lydia, noted for his great wealth. 

nouveau riche

noun
  • New money; wealthy persons whose fortunes are newly acquired, and who are therefore perceived to lack the refinement of those who were raised wealthy. 

adj
  • Newly rich; like a nouveau riche. 

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