feticide vs miscarriage

feticide

noun
  • The killing of a fetus or embryo; an induced abortion. 

  • One who kills a fetus. 

miscarriage

noun
  • The spontaneous natural termination of a pregnancy, especially before it is viable; the fatal expulsion of a foetus from the womb before term. 

  • A failure; a mistake or error. 

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