fu vs mastery

fu

noun
  • Expertise, mastery 

  • A Chinese literary form developed during the times of the Han dynasty that combines prose and poetry, sometimes called rhymed prose. 

  • flux unit 

mastery

noun
  • The act or process of mastering; the state of having mastered; expertise. 

  • Superiority in war or competition; victory; triumph; preeminence. 

  • The position or authority of a master; dominion; command; supremacy; superiority. 

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