Railing (noun)
A fence or barrier consisting of one or more horizontal rails and vertical supports.
“During the war, everyone’s railings were taken away to make bombers.”
Railing (verb)
present participle of rail
Banister (noun)
The handrail on the side of a staircase.
Banister (noun)
One of the vertical supports of a handrail; a baluster.
Banister (verb)
To construct a banister
Banister (verb)
To act as a banister
Wiktionary
Railing (noun)
a fence or barrier made of rails
“wrought-iron railings”
Banister (noun)
the structure formed by the uprights and handrail at the side of a staircase
“he vaulted the banister”
“she peered over the banisters”
Banister (noun)
a single upright at the side of a staircase
“I stuck my head between the banisters”
Oxford Dictionary