What is the difference between a railing and a handrail?
Railings on the side of the platform, handrails on the side of the stairs
This is called a balcony guardrail / railings / fence
This is the outdoor railing, the top of the sideways for the handrails (armrest is part of the railing)
Handrail: staircase hand, as well as electric staircase guardrail