gondola vs train ferry

gondola

noun
  • That part of a transporter bridge that carries passengers, vehicles, along the length of the bridge span. 

  • A small long, narrow boat with a high prow and stern, propelled with a single oar, especially in Venice. 

  • The car or basket of a hot-air balloon, airship, zeppelin, etc. 

  • A type of open railway car with low sides, used to carry heavy freight such as crushed rock or steel. 

  • The hanging cart in which a glass-cleaning worker stands to clean exterior glass on tall buildings. 

  • A free-standing shelving unit in a supermarket or other retail store. 

  • An enclosed car attached to a cable mechanically lifted up the side of a mountain; an enclosed ski lift; a cable car. 

verb
  • To travel by gondola. 

train ferry

noun
  • A ferry used to transport rail vehicles from one railway line to another across a stretch of water. 

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