grapnel vs kedge

grapnel

noun
  • A small anchor, having more than two flukes, used for anchoring a small vessel. 

  • A grappling iron. 

  • A device with a multiple hook at one end and attached to a rope, which is thrown or hooked over a firm mooring to secure an object attached to the other end of the rope. 

verb
  • To connect (ships) with a grapnel. 

kedge

noun
  • A small anchor used for warping a vessel. 

  • A glutton. 

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. 

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