extratemporal vs sudden

extratemporal

adj
  • That appears to happen outside of time. 

  • Of or pertaining to the side of the head behind the eyes; external to the temporal bone of the skull. 

sudden

adj
  • Happening quickly and with little or no warning. 

adv
  • Suddenly. 

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