anti vs flip side

anti

noun
  • A person opposed to a concept or principle. 

  • A fan who objects to a particular creator, franchise, fandom, character, ship, etc., especially on moral or sociopolitical grounds. 

adj
  • That has a torsion angle between 90° and 180° 

  • Opposed to something. 

flip side

noun
  • The converse; opposite, usually negative, inherent aspects or consequences of something. 

  • The reverse, in contrast to the obverse. 

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