Pressure is a force spread out over a surface. Weight is a force. If the same person wears the three different styles of shoes shown on this page, the heels of the shoes in diagram A apply the greatest pressure on a surface, diagram B, medium pressure, and diagram C the least pressure.The difference in the amount of pressure applied when the force is the same is because the surface areas are different. The smaller the sufface area, the greater is the pressure. This is because the force is spread over a smaller area.
For more information about pressure, see PHYSICS:PRESSURE