event vs milepost

event

noun
  • A point in spacetime having three spatial coordinates and one temporal coordinate. 

  • In the event, he turned out to have what I needed anyway. 

  • A possible action that the user can perform that is monitored by an application or the operating system (event listener). When an event occurs an event handler is called which performs a specific task. 

  • One of several contests that combine to make up a competition. 

  • An occurrence; something that happens. 

  • An end result; an outcome (now chiefly in phrases). 

  • A set of some of the possible outcomes; a subset of the sample space. 

  • An episode of severe health conditions. 

  • A prearranged social activity (function, etc.) 

milepost

noun
  • A post on a highway, often with one or more fingerposts, showing the distance in miles to nearby places 

  • A sign or post beside a railway marking the distance from the (actual or nominal) start of a line (usually the principal terminus or junction with a more major line) 

verb
  • To place mileposts along (a road, etc.). 

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