shunt vs trunnion

shunt

noun
  • The shifting of the studs on a projectile from the deep to the shallow sides of the grooves in its discharge from a shunt gun. 

  • A switch on a railway used to move a train from one track to another. 

  • An act of moving (suddenly), as due to a push or shove. 

  • An abnormal passage between body channels. 

  • A passage between body channels constructed surgically as a bypass; a tube inserted into the body to create such a passage. 

  • A minor collision between vehicles. 

  • A connection used as an alternative path between parts of an electrical circuit. 

verb
  • To have a minor collision, especially in a motor car. 

  • To move data in memory to a physical disk. 

  • To divert the flow of a body fluid. 

  • To carry on arbitrage between the London stock exchange and provincial stock exchanges. 

  • To provide with a shunt. 

  • To divert to a less important place, position, or state. 

  • To move a train from one track to another, or to move carriages, etc. from one train to another. 

  • To cause to move (suddenly), as by pushing or shoving; to give a (sudden) start to. 

  • To divert electric current by providing an alternative path. 

trunnion

noun
  • One of the short stubby bearings on either side of a cannon; a gudgeon. 

  • A similar rotational bearing comprising a rotating arc or ring sliding in the groove of a stationary arc, used in machinery to allow a workpiece to be moved relative to a fixed tool. 

  • A similar rotational bearing used in automotive suspensions. 

  • A shaft, held by a bearing, at each end or side of a rotatable object. 

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