persuadable vs weak-willed

persuadable

adj

  • Able to be persuaded or convinced. 

noun

  • Someone or something that can be persuaded. 

weak-willed

adj

  • easily swayed 

  • irresolute, indecisive 

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