father-slayer vs homicide

father-slayer

noun
  • One who kills or murders one's father; a patricide 

homicide

noun
  • The killing of one person by another, whether premeditated or unintentional. 

  • The department within a police force that investigates cases of homicide. 

  • A person who kills another. 

  • A victim of homicide; a person who has been unlawfully killed by someone else. 

How often have the words father-slayer and homicide occurred in a corpus of books? (source: Google Ngram Viewer )