PLAN vs Tonto

PLAN

name
  • The People's Liberation Army Navy. 

  • A particular standardized examination taken by high-school students. 

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