hatchet man vs sniper

hatchet man

noun
  • A male professional killer or gunman. 

  • A male who carries out brutal and unpleasant duties on behalf of another, such as firing dead wood employees. 

  • A male hatchet-wielding participant in a Chinese-American tong war. 

sniper

noun
  • One who shoots from a concealed position. 

  • A person or automated process set up by a person who or which attempts to win an online auction by placing a bid only seconds before the auction ends, leaving no time for other bidders to respond 

  • A hunter of snipe (the bird). 

  • A player who specializes in scoring goals. 

  • A person using long-range small arms for precise attacks from a concealed position. 

  • Any attacker using a non-contact weapon against a specific target from a concealed position. 

  • One who criticizes; a person who frequently snipes at others. 

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