beautiful vs butt-ugly

beautiful

adj
  • Well executed. 

  • Good, admirable. 

  • Attractive and possessing beauty. 

  • Pleasant; clear. 

noun
  • Someone who is beautiful. Can be used as a term of address. 

butt-ugly

adj
  • Extremely ugly. 

How often have the words beautiful and butt-ugly occurred in a corpus of books? (source: Google Ngram Viewer )