lewd vs unappropriate

lewd

adj
  • Lascivious, sexually promiscuous, rude. 

noun
  • A sexually suggestive image, particularly one which does not involve full nudity. 

verb
  • To express lust; to behave in a lewd manner. 

unappropriate

adj
  • Inappropriate; unsuitable. 

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

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