banker vs collector

banker

noun
  • A ditcher; a drain digger. 

  • A banksman. 

  • The dealer in a casino, or one who keeps the bank in a banking game. 

  • A vessel employed in the cod fishery on the banks of Newfoundland. 

  • A railway locomotive that can be attached to the rear of a train to assist it in climbing an incline. 

  • One who conducts the business of banking; one who, individually, or as a member of a company, keeps an establishment for the deposit or loan of money, or for traffic in money, bills of exchange, etc. 

  • The stone bench on which a mason cuts or squares his work. 

collector

noun
  • A major sewer which collects sewerage from a number of smaller branch sewers 

  • One holding a Bachelor of Arts in Oxford, formerly appointed to superintend some scholastic proceedings in Lent. 

  • A person who is employed to collect payments. 

  • A person who or thing that collects, or which creates or manages a collection. 

  • A mafioso whose task is to collect protection money from small businesses 

  • The amplified terminal on a bipolar junction transistor. 

  • A compiler of books; one who collects scattered passages and puts them together in one book. 

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