corncob vs knag

corncob

noun
  • The central cylindrical core of an ear of corn (maize) on which the kernels are attached in rows. 

verb
  • To disintegrate by the blades becoming severed from the axis 

  • To defeat (someone) who then refuses to admit defeat. 

knag

noun
  • A small cask or barrel; a keg or noggin 

  • A pointed rock or crag 

  • A knot in a piece of wood or the base of a branch 

  • A short spur or stiff projection from the trunk or branch of a tree, such as the stunted dead branch of a fir 

  • A peg or hook for hanging something on 

verb
  • To hang something on a peg 

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