crosspiece vs trave

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. 

trave

noun
  • A crossbeam. 

  • A wooden frame to confine unruly horses while they are shod. 

  • A section formed by crossbeams. 

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