abend vs stagnate

abend

verb
  • To terminate abnormally. 

noun
  • The abnormal termination of a program. 

  • Termination of a process prior to completion. 

stagnate

verb
  • To cease to flow or run. 

  • To cease to develop, advance, or change; to become idle. 

  • To be or become foul from standing. 

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