abend vs postamble

abend

noun
  • Termination of a process prior to completion. 

  • The abnormal termination of a program. 

verb
  • To terminate abnormally. 

postamble

noun
  • Closing statements of a computer program; final or closing part of data. 

  • A short concluding statement or remark, especially summarizing a formal document or statute. 

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