* Both are depressions in the Earth's surface. They are areas of lower elevation compared to the surrounding land.

* Both are formed by erosion. Over time, the forces of nature like water, wind, and ice wear away at the land, creating these depressions.

* Both can be found in various sizes and shapes. From small, narrow valleys to vast canyons, the scale and form of these landforms can vary greatly.

Here's how they differ:

* Formation: Canyons are primarily formed by rivers carving through rock over millions of years, while valleys can be formed by rivers, glaciers, or tectonic activity.

* Shape: Canyons typically have steep, vertical walls and a narrow, deep bottom, while valleys can be wider and shallower with gentler slopes.

* Location: Canyons are often found in arid regions, while valleys can be found in various climates.

In essence, a canyon is a type of valley, specifically one that is deep and narrow with steep sides.