cognac vs schnapps

cognac

noun
  • A brandy distilled from white wine in the region around Cognac in France. 

schnapps

noun
  • A serving of this beverage. 

  • A type of distilled alcoholic beverage (liquor), often with a herbal or fruit flavoring, typically drunk neat as an apéritif or digestif. 

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