The pressure exerted by liquid is called liquid pressure. The liquid pressure at a point is due to weight of the liquid above it. The liquid at lower depth has to bear the entire weight of the water above it. Pressure at any depth in a liquid is the same. Liquid pressure increases with depth. Liquid pressure acts in all directions. The upward force acting on an object when placed in the fluid is known as Upthrust. It is also known as buoyant force. Upthrust is always equal to the weight of the fluid displaced by the object.