superiority vs weakness

superiority

noun
  • The right which the superior enjoys in the land held by the vassal. 

  • The state of being superior. 

weakness

noun
  • An inadequate quality; fault 

  • The condition of being weak. 

  • A special fondness or desire. 

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