abend vs invalidation

abend

noun
  • The abnormal termination of a program. 

  • Termination of a process prior to completion. 

verb
  • To terminate abnormally. 

invalidation

noun
  • The act of invalidating, or the state of being invalidated 

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