charming vs frightful

charming

adj
  • Pleasant, charismatic. 

  • Delightful in a playful way which avoids responsibility or seriousness, as if attracting through a magical charm. 

noun
  • The casting of a magical charm. 

frightful

adj
  • Unpleasant, dreadful, awful (also used as an intensifier). 

  • Genuinely horrific, awful, or alarming. 

adv
  • Frightfully; very. 

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