crossbeam vs handrail

crossbeam

noun
  • A beam laid across the bitts, to which the cable is fastened when riding at anchor. 

  • A horizontal structural beam that runs perpendicular to the primary support beams; a girder. 

handrail

noun
  • A moving continuous belt-like rail on either side of an escalator which users can hold on to for support. 

  • A rail which can be held, such as on the side of a staircase, ramp or other walkway, and serving as a support or guard. 

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