What differentiates a dirigible from a balloon?

A dirigible is distinguished from a balloon primarily by its propulsion system. Dirigibles, also known as airships, possess engines that allow them to be steered and propel themselves through the air, which gives them greater control over direction and speed compared to balloons. Balloons, on the other hand, are subject to the whims of the wind as they lack such propulsion; they are filled with gas to become buoyant but do not have the capability to navigate actively.

While it is true that dirigibles can carry passengers and may be larger than traditional balloons, these traits are not what fundamentally separates the two types of aircraft. The defining characteristic of a dirigible is its ability to maneuver and be directed via its engine, enhancing its versatility in aviation applications.