gold mine vs stowage

gold mine

noun
  • A plentiful stockpile of something sought after. 

  • A mine for gold ore or metal. 

  • A very profitable economic venture. 

stowage

noun
  • Things that are stowed. 

  • Amount of room for storing things. 

  • A place where things are stowed. 

  • The act or practice of stowing. 

  • A charge for stowing and storage. 

How often have the words gold mine and stowage occurred in a corpus of books? (source: Google Ngram Viewer )