banister vs balusters

banister and balusters both are nouns.

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

As nouns, banister and balusters are synonyms defined as:

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

Other synonyms of banister include balustrade, bannister, handrail.

banister (noun)	balusters (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