cranium vs noddle

cranium

noun
  • That part of the skull consisting of the bones enclosing the brain, but not including the bones of the face or jaw. 

  • Synonym of skull. 

  • The upper portion of the skull, including the neurocranium and facial bones, but not including the jawbone (mandible). 

noddle

noun
  • The head; the part of the body of an animal or human which contains the brain, mouth and main sense organs. 

  • The head as the seat of mental capacity or intellect. 

verb
  • To nod repeatedly. 

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