naff vs unappropriate

naff

adj
  • Bad; tasteless, poorly thought out, not workable. 

  • Heterosexual. 

unappropriate

adj
  • Inappropriate; unsuitable. 

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

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