other side vs similarity

other side

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

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

similarity

noun
  • A transformation that preserves angles and the ratios of distances 

  • The property of two matrices being similar. 

  • Closeness of appearance to something else. 

  • The relation of sharing properties. 

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