What is the difference between a pillar drill and a hand drill?

A Pillar Drill is usually a drilling device mounted onto a vertical pillar or post with some method of lowering the chuck in a controlled fashion onto the workpiece. The post is usually of cast iron with a table sometimes mounted below the chuck on which can be fited a small vice to hold the artical to be drilled. These can either be electrically powered or in older versions powered by hand. A hand drill is usually just as the name suggests a hand held drill, powered by either turning a geared handle which in turn rotates the chuck or an electric motor.