nouveau pauvre vs vieux riche

nouveau pauvre

noun
  • A newly impoverished person; somebody who has recently become poor. 

adj
  • Similar to or having the qualities of a nouveau povre. 

vieux riche

noun
  • Old money; wealthy persons whose fortunes are inherited, and who are therefore perceived to have refinement and good breeding. 

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