Ether vs yen

Ether

noun
  • A unit of the Ethereum digital currency, ETH. 

name
  • The god-personification of the bright, glowing upper air of heaven. He is the Roman counterpart of Aether. 

  • The ancient American prophet of Mormon theology who wrote the Book of Ether in the Book of Mormon. 

yen

noun
  • A coin or note worth one yen. 

  • A strong desire, urge, or yearning. 

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

  • Opium. 

verb
  • To have a strong desire for. 

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