what are balustrade and handrail?
is that balustrade is (architecture) a row of balusters topped by a rail, serving as an open parapet, as along the edge of a balcony, terrace, bridge, staircase, or the eaves of a building while handrail is a rail which can be held, such as on the side of a staircase, ramp or other walkway, and serving as a support or ...