occurrent vs occurring

occurrent

noun
  • An event, something that occurs. 

  • One who comes to meet another. 

adj
  • Pertaining to occurrence; having to do with an occurrence. 

  • Current, actual, occurring. 

occurring

noun
  • An instance of something occurring; an event or happening. 

adj
  • That occurs in a specified manner. 

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