nomisma vs sixpence

nomisma

noun
  • current coin of a state (ancient). 

  • coinage, esp. with connotation as a means to control a monetary system (rare). 

  • A stamp, an image on a coin. 

  • money or currency (modern). 

  • Coinage, a monetary system. 

sixpence

noun
  • A former British coin worth sixpence, first minted in 1551. 

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