Here are some other terms you might encounter:

* Gorge: This is a general term for a narrow, deep valley, often with steep sides. It doesn't necessarily imply erosion by water.

* Ravine: This is a smaller, less dramatic version of a gorge.

* Chasm: This term refers to a very deep, narrow opening in the earth's surface, often with steep, vertical walls.

* Valley: This is a broader term that encompasses a wide range of depressions in the land, including those formed by water erosion.

However, canyon is the most specific and commonly used term for a deep gorge eroded by water.