crier vs dispatcher

crier

noun
  • An officer who proclaims the orders or directions of a court, or who gives public notice by loud proclamation, such as a town crier. 

  • One who cries. 

dispatcher

noun
  • In a transportation organization, a person who controls the movements of vehicles. 

  • Any die used for cheating, whether fraudulently weighted or bearing duplicate numbers. 

  • A piece of software responsible for assigning priorities and resources to tasks waiting to be scheduled. 

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