Tonto vs Vixen

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. 

Vixen

name

  • The fourth reindeer of Santa Claus. 

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