unappropriate vs undesirable

unappropriate

adj
  • Inappropriate; unsuitable. 

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

undesirable

adj
  • objectionable or not likely to please 

noun
  • An undesirable person. 

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