abhor vs frown on

abhor

verb
  • To regard (someone or something) as horrifying or detestable; to feel great repugnance toward. 

  • To turn aside or avoid; to keep away from; to reject. 

frown on

verb
  • To disapprove of (something or someone, often a behavior); to express disapproval of (something or someone). 

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