appalling vs obnoxious

appalling

adj
  • Extremely bad; terrible 

  • Horrifying and astonishing. 

obnoxious

adj
  • Extremely offensive or unpleasant; very annoying, contemptible, or odious. 

  • Exposed or vulnerable to something, especially harm or injury. 

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