billboard vs starboard

billboard

noun
  • A piece of thick plank, armed with iron plates, and fixed on the bow or fore-channels of a vessel, for the bill or fluke of the anchor to rest on. 

  • A very large outdoor sign, generally used for advertising. 

  • A sprite that always faces the screen, no matter which direction it is looked at from. 

starboard

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. 

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

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