centurion vs herald

centurion

noun
  • An officer of the ancient Roman army, in command of a century of soldiers. 

  • A player who scores a century. 

  • A pilot in the United States Navy who has performed 100 night landings on an aircraft carrier. 

herald

noun
  • An official whose speciality is heraldry, especially one between the ranks of pursuivant and king-of-arms. 

  • A harbinger, giving signs of things to come. 

  • A handbill consisting of an advertisement. 

  • A messenger, especially one bringing important news. 

  • A moth of the species Scoliopteryx libatrix. 

verb
  • To proclaim or announce an event. 

  • To greet something with excitement; to hail. 

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