ex- vs one-time

ex-

prefix
  • former, but still living (almost always used with a hyphen) 

  • out of 

  • outside 

  • Lacking. 

one-time

adj
  • Occurring or used in a single instance and then never again. 

  • Of or pertaining to a specific time in the past. 

verb
  • To shoot (the ball or puck) directly from a teammate's pass. 

noun
  • The police. 

How often have the words ex- and one-time occurred in a corpus of books? (source: Google Ngram Viewer )