brewsky vs whiskey

brewsky

noun
  • A beer. 

whiskey

noun
  • A drink of whiskey. 

  • A light gig or carriage; a tim-whiskey. 

  • A liquor distilled from the fermented mash of grain (as rye, corn, or barley). 

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