whim vs yen

whim

noun
  • A fanciful impulse, or sudden change of idea. 

  • A bird, the Eurasian wigeon. 

  • A large capstan or vertical drum turned by horse power or steam power, for raising ore or water, etc., from mines, or for other purposes 

verb
  • To be seized with a whim; to be capricious. 

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 whim and yen occurred in a corpus of books? (source: Google Ngram Viewer )