commandery vs fu

commandery

noun
  • Any of various administrative divisions of imperial China. 

  • The smallest division of a manor under the control of a commander of an order of knights, originally only the Knights Hospitaller. 

  • A chapter of a secret order, especially the Knights Templar (order affiliated with Freemasonry). 

fu

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

  • flux unit 

  • Expertise, mastery 

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