ending vs rudimentary

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"). 

rudimentary

noun
  • One of the rudimentary mammae of boars. 

adj
  • Basic; minimal; with less than, or only the minimum, necessary. 

  • Of or relating to one or more rudiments. 

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