assassinate vs preserve

assassinate

verb
  • To harm, ruin, or defame severely or destroy by treachery, slander, libel, or obscure attack. 

  • To murder someone, especially an important person, by a sudden or obscure attack, especially for ideological or political reasons. 

preserve

verb
  • To protect; to keep from harm or injury. 

  • To save from decay by the use of some preservative substance, such as sugar or salt; to season and prepare (fruits, meat, etc.) for storage. 

  • To maintain throughout; to keep intact. 

noun
  • An activity with restricted access. 

  • A sweet spread made of any of a variety of fruits. 

  • A reservation, a nature preserve. 

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