anti vs diametral

anti

adj
  • Opposed to something. 

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

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. 

diametral

adj
  • Contrary; diametrically opposed. 

  • Of, relating to, or measured across a diameter. 

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