dispatcher vs harbinger

dispatcher

noun
  • 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. 

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

harbinger

verb
  • To announce or precede; to be a harbinger of. 

noun
  • A person or thing that foreshadows or foretells the coming of someone or something. 

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