persuasiveness vs weakness

persuasiveness

noun
  • The capability of a person or argument to convince or persuade someone to accept a desired way of thinking. 

weakness

noun
  • A special fondness or desire. 

  • An inadequate quality; fault 

  • The condition of being weak. 

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