chair vs railbed

chair

noun
  • An iron block used on railways to support the rails and secure them to the sleepers, and similar devices. 

  • One of two possible conformers of cyclohexane rings (the other being boat), shaped roughly like a chair. 

  • A vehicle for one person; either a sedan borne upon poles, or a two-wheeled carriage drawn by one horse; a gig. 

  • A distinguished professorship at a university. 

  • The seat or office of a person in authority, such as a judge or bishop. 

  • An item of furniture used to sit on or in, comprising a seat, legs or wheels, back, and sometimes arm rests, for use by one person. Compare stool, couch, sofa, settee, loveseat and bench. 

  • The seating position of a particular musician in an orchestra. 

verb
  • To award a chair to (a winning poet) at a Welsh eisteddfod. 

  • To act as chairperson at; to preside over. 

  • To carry in a seated position upon one's shoulders, especially in celebration or victory. 

railbed

noun
  • The substructure of a railway, underlying the tracks; the roadbed of a railroad. 

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