handrail vs balusters

handrail and balusters both are nouns.

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

As nouns, handrail and balusters are synonyms defined as:

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

Other synonyms of handrail include balustrade, banister, bannister.

handrail (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