restore vs weaken

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. 

weaken

verb
  • To make weaker or less strong. 

  • To become weaker or less strong. 

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