ill-suited vs unappropriate

ill-suited

adj
  • unsuitable, unfit or inappropriate for some purpose 

  • not suiting each other; poorly matched 

unappropriate

adj
  • Inappropriate; unsuitable. 

verb
  • To take from private possession; to restore to the possession or right of all. 

How often have the words ill-suited and unappropriate occurred in a corpus of books? (source: Google Ngram Viewer )