airship

An airship is a type of aircraft that uses large, buoyant gases like helium or historically hydrogen to stay afloat in the air. Unlike airplanes, which rely on wings and engines for lift and movement, airships have a lightweight frame with a gas-filled envelope that provides lift, and they are usually powered by engines for steering and propulsion. They can carry passengers or cargo and are valued for their ability to hover and move slowly over long distances with minimal noise and disturbance. Modern airships are often used for advertising, surveillance, and tourism.