errand boy vs headhunter

errand boy

noun
  • Someone in a responsible position who performs relatively menial tasks for a senior manager. 

  • A male employed to run errands. 

headhunter

noun
  • One who recruits senior personnel for a company. 

  • A person who practises headhunting, the taking and preserving of a person's head after killing them. 

  • A pitcher who throws at the batter's head. 

  • A player who uses a hockey stick to attempt to strike an opponent's head. 

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