In its purest form, a gimbal is a pivoted support that permits the rotation of an object about an axis. In photography terms a gimbal is a device that allows you to capture stabilized, smooth footage from your camera or phone camera while moving. The two most common types of stabilization are 3-axis and 2-axis. 3-axis stabilizers counteract all three motions: up/down (yaw), left/right (pitch), and forward/backward (roll).
3-axis is the preferred type for professionals who want to eliminate camera shake as much as possible. 2-axis stabilizers only compensate for vertical motion which can be good enough if you’re not doing any panning or tilting movements on a tripodStand to which the camera can be attached hold it steady, especially during slow exposure shots where camera shake must be avoided. Most tripods have three legs while professionals prefer the more compact but less stable one-legged (mono) versions..
Phone gimbals are now relatively cheap – examples.