In geometry and physics, a wedge is a solid object that tapers smoothly from a broader cross-sectional area at one end to a more acute point at the other. Functionally, the wedge operates by converting an applied force into a highly localized, increasing pressure differential. When force is exerted perpendicular to the axis of motion, the wedge displaces materials by exploiting the geometric relationship between applied force and the narrowing cross-section. This mechanism allows for the separation, splitting, or interlocking of materials, making the wedge a fundamental principle in tool design and material separation processes across various technological disciplines.