antonym vs other side

antonym

noun
  • A word which has the opposite meaning of another word. 

  • A word that describes one end of a scale, while its opposite describes the other end, such as large versus small; a gradable antonym. 

other side

noun
  • Used other than figuratively or idiomatically: see other, side. 

  • The afterlife, as a supernatural realm inhabited by spirits of deceased people. 

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