Gap vs Harrow

Gap

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

Harrow

name
  • A town in northwestern Greater London, England. 

  • A London borough of Greater London, England. 

  • A prestigious public school for boys in the town of Harrow. 

  • A surname originating as an occupation for a harrower. 

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