spar vs starboard

spar

verb
  • To supply or equip (a vessel) with spars. 

  • To contest in words; to wrangle. 

  • To fight, especially as practice for martial arts or hand-to-hand combat. 

  • To strike with the feet or spurs, as cocks do. 

noun
  • Any crystal with readily discernible faces. 

  • A rafter of a roof. 

  • A thick pole or piece of wood. 

  • A beam-like structural member that supports ribs in an aircraft wing or other airfoil. 

  • A sparring session; a preliminary fight, as in boxing or cock-fighting. 

  • Any of various microcrystalline minerals, of light, translucent, or transparent appearance, which are easily cleft. 

  • Any linear object used as a mast, sprit, yard, boom, pole or gaff. 

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 spar and starboard occurred in a corpus of books? (source: Google Ngram Viewer )