agonizing vs dreadful

agonizing

noun
  • The act of one who agonizes. 

adj
  • Causing physical or mental agony. 

dreadful

noun
  • A shocker: a report of a crime written in a provokingly lurid style. 

  • A shocking or sensational crime. 

  • A journal or broadsheet printing such reports. 

adv
  • Dreadfully. 

adj
  • Genuinely horrific, awful, or alarming; dangerous, risky. 

  • Unpleasant, awful, very bad (also used as an intensifier). 

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