Aerotrain is a term that refers to a type of train or transportation that travels on air-cushioned tracks, providing a faster and smoother ride. There are many synonyms for the word aerotrain, including hovertrain, maglev train, and air train. Hovertrain refers to a train that uses magnetic levitation to lift off the ground and travel along a track. Maglev train refers to a train that uses magnetic fields to levitate above the ground and propel forward. Air train refers to a train that uses pneumatic tubes to move through the air and travel at high speeds. These synonyms highlight the innovation and futuristic technology behind this type of transportation.