eradication vs matricide

eradication

noun
  • The act of plucking up by the roots; an uprooting; extirpation; utter destruction. 

  • The state of being plucked up by the roots. 

matricide

noun
  • The killing of one's mother. 

  • A person who kills his or her mother. 

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