removal vs rubout

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. 

rubout

noun
  • An assassination. 

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