kidnap vs kidnapping

kidnap

noun
  • The crime, or an instance, of kidnapping. 

verb
  • To seize or detain a person unlawfully and move or conceal them; sometimes for ransom. 

kidnapping

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

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