Walkway vs. Sidewalk: What's the Difference?

Walkway and Sidewalk Definitions
Walkway
A passage or path for walking, especially one that is roofed, paved, or elevated above its surroundings.
Sidewalk
A paved walkway along the side of a street.
Walkway
A clearly defined path for pedestrians.
Sidewalk
(US) (usually) a paved footpath located at the side of a road, for the use of pedestrians
Walkway
A path set aside for walking;
After the blizzard he shoveled the front walk
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Sidewalk
Any paved footpath, even if not located at the side of a road
Sidewalk
A walk for foot passengers at the side of a street or road; a foot pavement.
Sidewalk
Walk consisting of a paved area for pedestrians; usually beside a street or roadway