money market vs stock exchange

money market

noun
  • A market for trading short-term debt instruments, such as treasury bills, commercial paper, bankers' acceptances, and certificates of deposit. 

stock exchange

noun
  • An organisation that trades stocks in of companies for money and vice versa. 

  • A building that trades stocks in of companies for money and vice versa. 

How often have the words money market and stock exchange occurred in a corpus of books? (source: Google Ngram Viewer )