carrot top vs redhead

carrot top

noun
  • A person with red hair; a redhead. 

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 carrot top and redhead occurred in a corpus of books? (source: Google Ngram Viewer )