conn vs coxswain

conn

noun
  • The duty of directing a ship, usually used with the verb to have or to take and accompanied by the article "the." 

verb
  • To direct a ship; to superintend the steering of (a vessel); to watch the course of (a vessel) and direct the helmsman how to steer (especially through a channel, etc, rather than steer a compass direction). 

coxswain

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

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

  • A rank or position. 

verb
  • To act as coxswain for. 

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