entrain vs starboard

entrain

verb
  • To draw along as a current does. 

  • To suspend small particles in the current of a fluid. 

  • To get into or board a railway train. 

  • To put aboard a railway train. 

  • To become trained or conditioned in a pattern of brain behavior. 

  • To set up or propagate a signal, such as an oscillation. 

  • To encarriage, to conjoin, to link; as in a series of entities, elements, objects or processes. 

starboard

verb
  • To put to the right, or starboard, side of a vessel. 

noun
  • The righthand side of a ship, boat or aircraft when facing the front, or fore or bow. Used to unambiguously refer to directions according to the sides of the vessel, rather than those of a crew member or object. 

  • One of the two traditional watches aboard a ship standing a watch in two. 

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