Cognac vs Gap

Cognac

name
  • A city in the Charente department, former region of Poitou-Charentes, region of New Aquitaine, France; famous for cognac brandy. 

Gap

name
  • A town, the capital of the department of the Hautes-Alpes, Provence-Alpes-Côte d'Azur, France. 

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