off-color vs raunchy

off-color

adj
  • Dirty, vulgar or obscene, especially in a way that is unpleasant. 

  • Feeling mildly unwell. 

  • Different than usual. 

  • Of the wrong color. 

raunchy

adj
  • With dishonorable, base and vulgar expression. 

  • Very low-class; inferior; inadequate. 

  • Lecherous. 

  • Smutty; indecent. 

  • Sexually seductive. 

How often have the words off-color and raunchy occurred in a corpus of books? (source: Google Ngram Viewer )