abend vs abrupt

abend

verb
  • To terminate abnormally. 

noun
  • The abnormal termination of a program. 

  • Termination of a process prior to completion. 

abrupt

verb
  • To interrupt suddenly. 

adj
  • Without notice to prepare the mind for the event; sudden; hasty; unceremonious. 

  • Curt in manner. 

  • Suddenly terminating, as if cut off; truncate. 

  • Having sudden transitions from one subject or state to another; unconnected; disjointed. 

  • Extremely steep or craggy as if broken up; precipitous. 

noun
  • Something which is abrupt; an abyss. 

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