curbing vs kerb

curbing and kerb both are nouns.

Word	Noun	Adjective	Verb	Adverb
curbing	Yes	No	No	No
kerb	Yes	No	No	No

As nouns, curbing and kerb are synonyms defined as:

curbing and kerb: an edge between a sidewalk and a roadway consisting of a line of curbstones (usually forming part of a gutter)

Other synonyms of curbing include curb.

curbing (noun)	kerb (noun)
an edge between a sidewalk and a roadway consisting of a line of curbstones (usually forming part of a gutter)	an edge between a sidewalk and a roadway consisting of a line of curbstones (usually forming part of a gutter)