adverse vs unbefriending

adverse

adj
  • 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. 

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

  • Opposite; confronting. 

unbefriending

adj
  • unfriendly; hostile 

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