Tonto vs customer

Tonto

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

  • A sidekick. 

name
  • A member of the Tonto Apaches. 

  • The Native American sidekick of the Lone Ranger. 

customer

noun
  • A native official who exacted customs duties. 

  • A person, especially one engaging in some sort of interaction with others. 

  • A patron, a client; one who purchases or receives a product or service from a business or merchant, or intends to do so. 

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