currency vs tenner

currency

noun
  • Paper money. 

  • Money or other items used to facilitate transactions. 

  • The state of being current; general acceptance or recognition. 

tenner

noun
  • A monetary note (bill) whose face value is ten basic units of currency. Originally, a ten-shilling (half pound) note. 

  • A tennis shoe. 

  • A kind of 10-kilowatt lamp. 

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