bannister vs banister

bannister and banister both are nouns.

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

As nouns, bannister and banister are synonyms defined as:

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

Other synonyms of bannister include balusters, balustrade, handrail.

bannister (noun)	banister (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