jay vs yarrow

jay

noun
  • Any of the numerous species of birds belonging to several genera within the family Corvidae, including Garrulus, Cyanocitta, Aphelocoma, Perisoreus, Cyanocorax, Gymnorhinus, Cyanolyca, Ptilostomus, and Calocitta, allied to the crows, but smaller, more graceful in form, often handsomely coloured, usually having a crest, and often noisy. 

  • Any of various large papilionid butterflies of the genus Graphium. 

  • The Indian roller, Coracias benghalensis. 

  • The name of the Latin-script letter J. 

  • A marijuana cigarette; a joint. 

  • Any of various other birds of similar appearance and behaviour. 

yarrow

noun
  • Common yarrow, Achillea millefolium, the type species of the genus. 

  • The green woodpecker, Picus viridis. 

  • Any of several pungent Eurasian and North American herbs, of the genus Achillea, used in traditional herbal medicine. 

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