fastener vs kedge

fastener

noun
  • Something or someone that fastens. 

  • Mechanically, any device that fastens; especially, a collective term for items such as screws, nuts, washers, clasps, bolts and the like. 

kedge

noun
  • A glutton. 

  • A small anchor used for warping a vessel. 

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 fastener and kedge occurred in a corpus of books? (source: Google Ngram Viewer )