unfun vs ungood

unfun

adj

  • Not fun. 

noun

  • Lack or absence of fun; funlessness. 

ungood

adj

  • Not good; bad 

  • Those who are not good; the wicked, evil, or bad 

noun

  • Lack or absence of good; goodlessness; bad 

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