extratemporal vs unfading

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. 

unfading

adj
  • Not fading; not losing its color or intensity, or being forgotten. 

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