endpoint vs threshold

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. 

threshold

noun
  • Any end or boundary. 

  • The outset of something; the point of entry, or the beginning of an action. 

  • The bottom-most part of a doorway that one crosses to enter; a sill. 

  • The start of the landing area of a runway. 

  • The point where one mentally or physically is vulnerable in response to provocation or to particular things in general. As in emotions, stress, or pain. 

  • An entrance; the door or gate of a house. 

  • The quantitative point at which an action is triggered, especially a lower limit. 

  • The wage or salary at which income tax becomes due. 

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