petrol station vs plunger

petrol station

noun
  • A filling station, gas station; a facility selling fuel for road motor vehicles 

plunger

noun
  • The part of a cafetière that is pushed down to remove grounds from coffee. 

  • The moving portion of a solenoid. 

  • One who plunges; a diver. 

  • A device similar to a piston but without a mechanism; a long solid cylinder used, instead of a piston or bucket, as a forcer in pumps. 

  • The spring-loaded assembly that propels the ball onto the table. 

  • A boiler in which clay is beaten by a wheel to a creamy consistency. 

  • A horse that plunges, or throws itself suddenly forward. 

  • The sliding activator of an exploder, an electrical generator used to trigger electrical detonators such as blasting caps. 

  • A cavalryman. 

  • The firing pin of a breechloader. 

  • The internal piece of a syringe that pushes out or pulls in any contents. 

  • A device that is used to remove blockages from the drain of a basin or tub, by suction. 

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