bluey vs redhead

bluey

noun
  • A person with red hair. 

  • The metal lead. 

  • A bluebottle. 

  • A bushman's blanket. 

  • A disposable underpad. 

  • A collection of clothes and other belongings rolled up into a bundle for carrying; a swag. 

  • A blue film. 

  • A blue singlet, especially one from the Bonds clothing label. 

  • A blue cattle dog, especially a blue heeler. 

adj
  • Having a colour similar to blue. 

redhead

noun
  • A person with red hair. 

  • red-headed vulture (Sarcogyps calvus) 

  • red-headed bunting (Emberiza bruniceps) 

  • red-headed titi (Callicebus regulus) 

  • red-headed woodpecker (Melanerpes erythrocephalus) 

  • A North American duck (Aythya americana) highly esteemed as a game bird. 

  • A kind of milkweed (Asclepia curassavica), with red flowers, formerly used in medicine. 

  • Chinese red-headed centipede (Scolopendra subspinipes mutilans) 

  • A kind of 800-watt lamp. 

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