forgivable vs unpermissible

forgivable

adj
  • Able to be forgiven; worthy of forgiveness. 

  • Of a loan, or a portion of it: such that repayment may be deferred for a period if the lender meets certain obligations. 

unpermissible

adj
  • Not permissible. 

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