freshwater vs sweetwater

freshwater

adj
  • Consisting of fresh water. 

  • neoclassical, in reference to U.S. macroeconomics and economics departments near the Great Lakes. 

  • Unskilled as a seaman. 

  • Living in fresh water. 

noun
  • A body of fresh water 

sweetwater

noun
  • Water that still contains sucrose after filtration by a sugar cane refinery, usually one of the main by-products of a sugar cane refining process. 

  • A variety of white grape, better known as Chasselas. 

  • neoclassical, in reference to U.S. macroeconomics and economics departments around the Great Lakes. 

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