crosspiece vs ingot

crosspiece

noun
  • A horizontal or transverse beam or similar member that extends across or perpendicular to something. 

  • A bar or timber connecting two knightheads or two bitts; a timber over the windlass, with pins for belaying the running rigging. 

ingot

noun
  • A solid block of more or less pure metal, often but not necessarily bricklike in shape and trapezoidal in cross-section, the result of pouring out and cooling molten metal, often immediately after smelting from raw ore or alloying from constituents. 

verb
  • To form (scraps of metal) into ingots. 

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