Duff vs Tonto

Duff

name

  • A village in Saskatchewan, Canada 

  • An unincorporated community in Tennessee, United States 

  • A male given name 

  • An unincorporated community in Indiana, United States 

  • A surname. 

Tonto

name

  • The Native American sidekick of the Lone Ranger. 

  • A member of the Tonto Apaches. 

noun

  • A Native American who accepts a subservient position to a white person. 

  • A sidekick. 

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