abend vs concluding

abend

noun

  • Termination of a process prior to completion. 

  • The abnormal termination of a program. 

verb

  • To terminate abnormally. 

concluding

noun

  • A conclusion. 

adj

  • Finishing; closing; final. 

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