shroud vs wall knot

shroud

noun
  • One of a set of ropes or cables (rigging) attaching a mast to the sides of a vessel or to another anchor point, serving to support the mast sideways; such rigging collectively. 

  • That which clothes, covers, conceals, or protects; a garment. 

  • One of the two annular plates at the periphery of a water wheel, which form the sides of the buckets; a shroud plate. 

  • The branching top of a tree; foliage. 

  • A covered place used as a retreat or shelter, as a cave or den; also, a vault or crypt. 

  • That which covers or shelters like a shroud. 

  • A streamlined protective covering used to protect the payload during a rocket-powered launch. 

  • Especially, the dress for the dead; a winding sheet. 

verb
  • To cover with a shroud. 

  • To take shelter or harbour. 

  • To conceal or hide from view, as if by a shroud. 

  • To lop the branches from (a tree). 

wall knot

noun
  • A knot made by unlaying the strands of a rope, and making a bight with the first strand, then passing the second over the end of the first, and the third over the end of the second and through the bight of the first. 

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