crown jewels vs taj

crown jewels

noun
  • The jewelry that accompany the office of rulership in a monarchy, i.e. crown, scepter, signet ring, etc. 

  • The male genitalia. 

taj

noun
  • A crown worn by Indian princes as a sign of high rank. 

  • A tall brimless hat, usually conical or curved on top, worn in Muslim countries as a sign of distinction and prestige. 

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