chain store vs stock exchange

chain store

noun
  • A retail outlet that is one of a group of similar establishments having common format, contents, ownership and management. 

stock exchange

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

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

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