backup vs checkpoint

backup

noun
  • A copy of a file or record, stored separately from the original, that can be used to recover the original if it is destroyed or damaged. 

  • reinforcements 

  • A reserve or substitute. 

  • An accumulation of material caused by a (partial) obstruction or (complete) blockage of the flow or movement of the material, or an accumulation of material that causes an overflow due to the flow being greater than the maximum possible flow. 

adj
  • Supporting, reinforcing; (music) of or related to accompaniment 

  • Standby, reserve or extra. 

  • That is intended as a backup. 

checkpoint

noun
  • 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. 

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

verb
  • To set a checkpoint. 

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