superiority vs yielding

superiority

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

  • The state of being superior. 

yielding

adj
  • Docile, or inclined to give way to pressure. 

noun
  • A concession. 

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