catchment vs fund

catchment

noun
  • A catchment area, or the people it serves. 

  • Any structure or land feature which catches and holds water; the collection of such water. 

verb
  • To divide into catchment areas. 

fund

noun
  • A large supply of something to be drawn upon. 

  • A sum or source of money. 

  • An organization managing such money. 

  • 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 catchment and fund occurred in a corpus of books? (source: Google Ngram Viewer )