What is another word for ground-effect machines?
Pronunciation: [ɡɹˈa͡ʊndɪfˈɛkt məʃˈiːnz] (IPA) 
Ground-effect machines are also known as hovercraft, air-cushion vehicles, and ekranoplans. Hovercraft is a common synonym used for ground-effect machines as it is one of the most popular names for this transportation method. Air-cushion vehicles, as the name suggests, operate using a cushion of air that lifts the craft off the ground, reducing frictions and allowing for faster speeds. Ekranoplan is a Russian term popularly used for ground-effect machines, which means "screen plane." It was used to describe Soviet-era military vehicles that operated on a cushion of air above the water surface. In summary, these synonyms refer to machines that use air pressure to float and move above the ground or water surface.
