crosspiece vs rung

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. 

rung

noun
  • A crosspiece forming a step of a ladder; a round. 

  • A position in a hierarchy. 

  • A crosspiece between legs of a chair. 

verb
  • simple past tense of ring 

adj
  • Of a pig: having a ring through the nose. 

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