banister vs handrail

banister and handrail both are nouns.

Word	Noun	Adjective	Verb	Adverb
banister	Yes	No	No	No
handrail	Yes	No	No	No

As nouns, banister and handrail are synonyms defined as:

banister and handrail: a railing at the side of a staircase or balcony to prevent people from falling

Other synonyms of banister include balusters, balustrade, bannister.

banister (noun)	handrail (noun)
a railing at the side of a staircase or balcony to prevent people from falling	a railing at the side of a staircase or balcony to prevent people from falling