fish farm vs fishing

fish farm

noun
  • A place or facility dedicated to the raising of fish or other seafood for sale. 

fishing

noun
  • A fishery, a place for catching fish. 

  • The act of catching fish. 

  • The act of catching other forms of seafood, separately or together with fish. 

  • Commercial fishing: the business or industry of catching fish and other seafood for sale. 

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