redbird vs tawny

redbird

noun
  • Any of several unrelated American songbirds having red plumage, especially the tanager or cardinal. 

  • Any of various red cars formerly used in the New York City subway system; or a train of such cars. 

  • A capsule of secobarbital. 

tawny

noun
  • The common bullfinch or Eurasian bullfinch (Pyrrhula pyrrhula). 

  • Synonym of tenné (“a rarely-used tincture of orange or bright brown”) 

  • In full tawny port: a sweet, fortified port wine which is blended and matured in wooden casks. 

  • Tawny owl. 

  • Tawny frogmouth. 

  • A light brown to brownish orange colour. 

  • Something of a light brown or brownish orange colour (particularly if it has the word tawny in its name). 

adj
  • Of a light brown to brownish orange colour. 

verb
  • To become a light brown to brownish orange colour; to tan, to tawn. 

  • To cause (someone or something) to have a light brown to brownish orange colour; to tan, to tawn. 

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