kedge vs mud hook

kedge

verb
  • To move with the help of a kedge, as described above. 

  • To warp (a vessel) by carrying out a kedge in a boat, dropping it overboard, and hauling the vessel up to it. 

noun
  • A glutton. 

  • A small anchor used for warping a vessel. 

mud hook

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