abend vs induced abortion

abend

noun
  • Termination of a process prior to completion. 

  • The abnormal termination of a program. 

verb
  • To terminate abnormally. 

induced abortion

noun
  • A surgical or medicinal procedure that terminates a pregnancy by removing the fetus; a therapeutic abortion. It is a non-contraceptive form of birth control. 

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