kedge vs wishbone

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. 

wishbone

noun
  • Any sailing vessel rigged with a wishbone. 

  • A suspension component similar in shape to a chicken wishbone. 

  • A particular kind of offensive formation. See wishbone formation. 

  • A forked bone between the neck and breast of a bird consisting chiefly of the two clavicles fused at their median or lower end, regarded as a lucky charm in some countries. 

  • A spar in two parts, between which a sail is hoisted, the wishbone extending its clew. 

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