copyright infringement vs kidnapping

copyright infringement

noun
  • The unauthorized use of copyrighted material in a manner that violates one of the copyright owner's exclusive rights, such as the right to reproduce or perform the copyrighted work, or to make derivative works that build upon it. 

kidnapping

noun
  • The crime of taking a person against their will, sometimes for ransom. 

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