cross-purpose vs indecency

cross-purpose

noun
  • A contrary or conflicting purpose or understanding, especially an unintentional or misconceived one. 

indecency

noun
  • Something showing lack of decency; something (such as a word) that is indecent. 

  • Lack of decency; the property or degree of being indecent 

How often have the words cross-purpose and indecency occurred in a corpus of books? (source: Google Ngram Viewer )