lily-white vs unvirtuous

lily-white

adj
  • Pure, unblemished, immaculate. 

  • Of the Caucasian race; white. 

  • A shade of the color white. 

  • Innocent, having a reputation beyond reproach. 

unvirtuous

adj
  • Not virtuous; having no virtue. 

How often have the words lily-white and unvirtuous occurred in a corpus of books? (source: Google Ngram Viewer )