coxswain vs steersperson

coxswain

noun
  • A rank or position. 

  • The member of a crew who steers the shell and coordinates the power and rhythm of the rowers. 

  • In a ship's boat, the helmsman given charge of the boat's crew. 

verb
  • To act as coxswain for. 

steersperson

noun
  • A steersman or steerswoman 

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