crass vs unfun

crass

adj
  • Lacking finesse; crude and obvious. 

  • materialistic 

  • dense 

  • coarse; crude; unrefined or insensitive; lacking discrimination 

unfun

adj
  • Not fun. 

noun
  • Lack or absence of fun; funlessness. 

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