abend vs miscarriage

abend

noun
  • Termination of a process prior to completion. 

  • The abnormal termination of a program. 

verb
  • To terminate abnormally. 

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 abend and miscarriage occurred in a corpus of books? (source: Google Ngram Viewer )