A gimbal stabilizes a still or video camera when recording video. It compensates for unwanted movements and thus ensures smooth and stable recordings. You can buy gimbals from DJI, Zhiyun Tech, Feyutech and GoPro, among others.
When buying a gimbal, it is important to pay attention to the maximum load capacity. This is relevant to find out if the gimbal is compatible with your camera. Other factors that should influence your purchase decision are: Remote control, follow focus, battery life and object tracking. You can filter out these features separately using the filter function.
The word "gimbal" comes from the English and means cardanic suspension / bearing. The object is mounted in two planes. With a balanced center of gravity, this special mounting allows the object to move in three dimensions in the middle. Thus, inclinations of the environment are automatically compensated. - Source: http://www.drohnenwiki.de/gimbal-bildstabilisierung/