extratemporal vs inopportune

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. 

inopportune

adj
  • Happening/occurring at an inconvenient or inappropriate time. 

  • Unsuitable for some particular purpose. 

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