preserve vs violate

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. 

violate

verb
  • To break or disregard (a rule or convention). 

  • To cite (a person) for a parole violation. 

  • To rape. 

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