dinar vs hyperpyron

dinar

noun
  • An ancient Arab gold coin of 65 grains in weight. 

  • The official currency of several countries, including Algeria, Bahrain, Iraq, Jordan, Kuwait, Libya, Serbia, Tunisia and (as denar) North Macedonia. 

hyperpyron

noun
  • A Byzantine coin in use during the late Middle Ages, replacing the solidus as the Byzantine Empire’s gold coinage. 

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