stockpile vs stowage

stockpile

noun
  • A supply (especially a large one) of something kept for future use, specifically in case the cost of the item increases or if there a shortage. 

  • A supply of nuclear weapons kept by a country; a nuclear stockpile. 

  • A pile of coal or ore heaped up on the ground after it has been mined. 

verb
  • To accumulate or build up a supply of (something). 

  • To build up a stock of (nuclear weapons). 

  • To heap up piles of (coal or ore) on the ground after it has been mined. 

  • To build up a supply; to accumulate. 

stowage

noun
  • Amount of room for storing things. 

  • Things that are stowed. 

  • A place where things are stowed. 

  • The act or practice of stowing. 

  • A charge for stowing and storage. 

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