fearsome vs hideous

fearsome

adj
  • frightening, especially in appearance. 

hideous

adj
  • Extremely or shockingly ugly. 

  • Morally offensive; shocking; detestable. 

  • Hateful; shocking. 

  • Having a very unpleasant or frightening sound 

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