blowhole vs exit

blowhole

noun
  • A vent for the escape of steam or other gas. 

  • A top-facing opening to a cavity in the ground very near an ocean's shore, leading to a marine cave from which wave water or bursts of air are expelled. 

  • The spiracle, on the top of the head, through which cetaceans breathe. 

  • A vertical opening in the top of a computer case that lets hot air (primarily from the CPU heat sink) escape quickly. 

  • An unintended cavity filled with air in a casting product. 

verb
  • To fill or be filled with air in an unintended cavity. 

exit

noun
  • An opening or passage through which one can go from inside a place (such as a building, a room, or a vehicle) to the outside; an egress. 

  • A minor road (such as a ramp or slip road) which is used to leave a major road (such as an expressway, highway, or motorway). 

  • An act of going out or going away, or leaving; a departure. 

  • The act of departing from life; death. 

  • The action of an actor leaving a scene or the stage. 

verb
  • To depart from life; to die. 

  • To depart from or leave (a place or situation). 

  • To leave a scene or depart from a stage. 

  • Used as a stage direction for an actor: to leave the scene or stage. 

  • To go out or go away from a place or situation; to depart, to leave. 

  • To give up the lead. 

  • To alight or disembark from a vehicle. 

  • To end or terminate (a program, subroutine, etc.) 

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