unexercised vs unoccupied

unexercised

adj
  • Not having been exercised 

  • Not having been subjected to physical exercise. 

unoccupied

adj
  • Not employed on a task; idle 

  • Not occupied by foreign troops etc 

  • Not being used; vacant or free 

  • Not inhabited, especially by a tenant 

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