customer vs peddler

customer

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

  • A native official who exacted customs duties. 

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

peddler

noun
  • An itinerant seller of small goods. 

  • A fake-news disseminator; A conspiracy-theory propagator. 

  • A drug dealer. 

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