longing vs yen

longing

noun
  • An earnest and deep, not greatly passionate, but rather melancholic desire. 

  • The buying of a financial instrument with the expectation that its value will rise 

yen

noun
  • A strong desire, urge, or yearning. 

  • The unit of Japanese currency (symbol: ¥) since 1871, divided into 100 sen. 

  • Opium. 

  • A coin or note worth one yen. 

verb
  • To have a strong desire for. 

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