noddle vs read/write head

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. 

read/write head

noun

  • A combination read head and write head 

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