ending vs endpoint

ending

noun
  • The last part of something. 

  • A termination or conclusion. 

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

endpoint

noun
  • The entity at one end of a connection. 

  • A defined occurrence during the observation period of an experiment or study. 

  • The stage in a titration at which a change in the colour of an indicator indicates that no more titrant should be added. 

  • Part of a system that serves as a hook, allowing third-party code to intercept and modify behaviour at that point. 

  • Either of the two nodes of a graph of degree 1. 

  • Either of the two points at the ends of a line segment. 

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