skell vs swagman

skell

noun
  • A male suspicious person or crime suspect, especially a street person such as a drug dealer, pimp or panhandler. 

  • a homeless person, especially one who sleeps in the New York subway. 

verb
  • To fall off or fall over. 

swagman

noun
  • A middleman who buys and sells stolen goods; a fence. 

  • A man who travels around with a swag (“bundle of personal items”); specifically, an itinerant person, often seeking work in exchange for food and lodging. 

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