What is another word for air-cushion vehicle?
Pronunciation: [ˈe͡əkˈʊʃən vˈi͡əkə͡l] (IPA) 
An air-cushion vehicle, also known as ACV, is a type of vehicle that uses a cushion of air to glide over surfaces. They are often used for transportation purposes in areas where traditional vehicles cannot go, such as over water, ice, or marshy terrain. There are several synonyms for this type of vehicle, including hovercraft, airboat, and ground-effect vehicle. The term hovercraft is often used interchangeably with ACV; it's a type of ACV that uses air propulsion to hover above the surface. An airboat is similar to a hovercraft and uses a similar principle of air-cushion, but it has a rigid bottom and is often used for transportation in shallow water and marshy terrain. A ground-effect vehicle, on the other hand, uses a wing-like structure to create lift as it travels near the surface.
