contaminate vs restore

contaminate

verb
  • To soil, stain, corrupt, or infect by contact or association. 

  • To infect, often with bad objects 

  • To make something dangerous or toxic by introducing impurities or foreign matter. 

  • To make unfit for use by the introduction of unwholesome or undesirable elements. 

restore

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

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

  • 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. 

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