unapproachable vs unbefriending

unapproachable

adj
  • Aloof and unfriendly. 

  • Not accessible or able to be reached. 

  • Without any serious competition; unbeatable. 

unbefriending

adj
  • unfriendly; hostile 

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