foreboding vs horoscopy

foreboding

adj
  • Of ominous significance; serving as an ill omen; foretelling of harm or difficulty. 

noun
  • A sense of evil to come. 

  • An evil omen. 

horoscopy

noun
  • The casting of horoscopes. 

  • The aspect of the stars at the time of a person's birth. 

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