different between sidewall vs sidewalk

English

side +? wall.

sidewall (plural sidewalls)

The side of a tire.
If the puncture had been in the tread I could have had the tire patched, but it was in the sidewall and they can't fix that: they have to replace the whole tire.
The wall forming the side of a structure; a side wall.
1. The wall forming the side of a racquetball court.

From side +? walk.

sidewalk (plural sidewalks)

(US) a footpath, usually paved, at the side of a road for the use of pedestrians; a pavement (UK) or footpath (Australia, New Zealand)
(US, by extension) any paved footpath, even if not located at the side of a road

Send