Gas vs Haggard

Gas

name
  • A city in Kansas. 

  • A commune in Eure-et-Loir, France. 

Haggard

name
  • An unincorporated community in Gray County, Kansas, United States. 

  • A surname. 

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