infanticide vs putting to death

infanticide

noun
  • The murderer of a child: a person who has committed infanticide. 

  • The murder of an infant. 

  • The criminal offence of killing of a newborn, committed by its mother while psychologically disturbed by the effects of childbirth or lactation, not regarded as murder. 

  • The killing of a young, immature animal by a mature adult of the same species. 

  • The murder of a child by a parent; filicide. 

putting to death

How often have the words infanticide and putting to death occurred in a corpus of books? (source: Google Ngram Viewer )