noddle vs nub

noddle

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

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

verb
  • To nod repeatedly. 

nub

noun
  • The essence or core of an issue, argument etc. 

  • a pointing stick 

  • The clitoris. 

  • A small lump or knob. 

verb
  • To push; to nudge. 

  • To beckon. 

  • To hit the ball weakly. 

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