adverse vs diametral

adverse

adj
  • Opposed; contrary; opposing one's interests or desire. 

  • Unfavorable; antagonistic in purpose or effect; hostile; actively opposing one's interests or wishes; contrary to one's welfare; acting against; working in an opposing direction. 

  • Opposite; confronting. 

diametral

adj
  • Contrary; diametrically opposed. 

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

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