Roger vs Tonto

Roger

name
  • A male given name from the Germanic languages. 

  • A surname originating as a patronymic. 

  • Jolly Roger (pirate flag) 

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 Roger and Tonto occurred in a corpus of books? (source: Google Ngram Viewer )