Answer:
A valley is a low area of land between hills or mountains, typically with a river or stream flowing through it. A canyon is a deep gorge, typically one with a river flowing through it.
The main difference is that a valley is a low area of land and a canyon has a very deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over geologic time scales.
Step-by-step explanation: