bullfinch vs puffin

bullfinch

noun
  • Any of various other Old World finches in the genus Pyrrhula. 

  • The Eurasian bullfinch (Pyrrhula pyrrhula). 

puffin

noun
  • The Atlantic puffin (Fratercula arctica) or (by extension) any of the other various small seabirds of the genera Fratercula and Lunda that are black and white with a brightly-coloured beak. 

  • Any of various African and Asian pierid butterflies of the genus Appias. Some species of this genus are also known as albatrosses. 

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