bottle deposit vs fund

bottle deposit

noun
  • A monetary deposit collected at the point of sale when a bottled beverage is purchased, and fully or partially refunded when the empty bottle is returned. 

fund

noun
  • A sum or source of money. 

  • An organization managing such money. 

  • A large supply of something to be drawn upon. 

  • A money-management operation, such as a mutual fund. 

verb
  • To form a debt into a stock charged with interest. 

  • To place (money) in a fund. 

  • To pay or provide money for. 

How often have the words bottle deposit and fund occurred in a corpus of books? (source: Google Ngram Viewer )