fu vs jun

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 

jun

noun
  • A monetary unit of North Korea and formerly of South Korea, equal to one hundredth of a won. 

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