unbending vs weak-willed

unbending

noun

  • The act of one who unbends. 

adj

  • inflexible and not yielding 

  • very reserved, aloof and asocial 

weak-willed

adj

  • irresolute, indecisive 

  • easily swayed 

How often have the words unbending and weak-willed occurred in a corpus of books? (source: Google Ngram Viewer )