restore vs upgrade

restore

verb
  • To bring back to good condition from a state of decay or ruin. 

  • To give in place of, or as restitution for. 

  • To recover (data, etc.) from a backup. 

  • To bring (a note) back to its original signification. 

  • To reestablish, or bring back into existence. 

  • To give or bring back (that which has been lost or taken); to bring back to the owner; to replace. 

noun
  • The act of recovering data or a system from a backup. 

upgrade

verb
  • To replace with something better. 

  • To improve, usually applied to technology, generally by complete replacement of one or more components 

  • To improve the equipment or furnishings of or services rendered to 

  • To replace a program with a later version of itself, a version having a higher version number or marketed under a more recent product name. 

  • To improve in condition or status. 

adv
  • Up a slope or grade. 

noun
  • An upward grade or slope. 

  • An improvement 

  • An improved component or replacement item, usually applied to technology 

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