redbird vs sanguine

redbird

noun
  • A capsule of secobarbital. 

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

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

sanguine

noun
  • Bloodstone. 

  • A tincture, seldom used, of a blood-red colour (not to be confused with murrey). 

  • Red crayon. 

  • Blood colour; red. 

  • Anything of a blood-red colour, as cloth. 

verb
  • To stain with blood; to impart the colour of blood to; to ensanguine. 

adj
  • Characterized by abundance and active circulation of blood. 

  • Having the colour of blood; blood red. 

  • Anticipating the best; optimistic; confident; full of hope. 

  • Warm; ardent. 

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