Wanderer vs customer

Wanderer

noun
  • someone connected with any number of soccer clubs known as the Wanderers. 

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 Wanderer and customer occurred in a corpus of books? (source: Google Ngram Viewer )