checkpoint vs spar

checkpoint

noun
  • A point or place where a check is performed, especially a point along a road or on a frontier where travellers are stopped for inspection 

  • A predetermined point in a map, level or scenario that the player may resume from if they die or restart from if they choose to. 

  • A situation, often represented by a point in time, at which the state of a database system is known to be valid, and to which it can be returned in the event of a crisis by using a combination of backups and logs; the data stored at this event. 

verb
  • To set a checkpoint. 

spar

noun
  • A thick pole or piece of wood. 

  • Any crystal with readily discernible faces. 

  • A rafter of a roof. 

  • 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. 

verb
  • To contest in words; to wrangle. 

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

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

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

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