occasion vs timing

occasion

noun
  • The time when something happens. 

  • Need; requirement, necessity. 

  • Something which causes something else; a cause. 

  • A reason or excuse; a motive; a persuasion. 

  • A special event or function. 

  • A particular happening; an instance or time when something occurred. 

  • An occurrence or state of affairs which causes some event or reaction; a motive or reason. 

  • A favorable opportunity; a convenient or timely chance. 

verb
  • To cause; to produce; to induce 

timing

noun
  • The time when something happens. 

  • The synchronization of the firing of the spark plugs in an internal combustion engine. 

  • The regulation of the pace of e.g. an athletic race, the speed of an engine, the delivery of a joke, or the occurrence of a series of events. 

  • An instance of recording the time of something. 

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