ending vs intermittent

ending

noun
  • A termination or conclusion. 

  • The last part of something. 

  • The last morpheme of a word, added to some base to make an inflected form (such as -s in "dogs"). 

intermittent

adj
  • Existing only for certain seasons; that is, being dry for part of the year. 

  • Stopping and starting, occurring, or presenting at intervals; coming after a particular time span. 

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