bloodshed vs matricide

bloodshed

noun
  • A slaughter; destruction of life, notably on a large scale. 

  • The shedding or spilling of blood. 

matricide

noun
  • The killing of one's mother. 

  • A person who kills his or her mother. 

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