regicide vs removal

regicide

noun
  • The killing of a king. 

  • One who kills a king. 

removal

noun
  • Murder. 

  • The relocation of a business etc. 

  • An evening funeral ritual in which the coffin holding the deceased is brought, usually from a funeral home, to the church where the funeral mass will be celebrated the following day. Prayers are said before and after the journey, after which mourners are typically received at the home of the deceased. 

  • The process of removing, or the fact of being removed. 

  • The dismissal of someone from office. 

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