Difference between Dale and Valley

Dale

Part of speech: noun

Definition: a valley in an otherwise hilly area.

Valley

Part of speech: noun

Definition: An elongated depression between hills or mountains, often with a river flowing through it.The area which drains into a river.Any structure resembling one, e.g., the meeting point of two pitched roofs.The internal angle formed by the intersection of two sloping roof planes.

Example sentence: The reason why Silicon Valley is a worldwide innovation center is because it is a open culture that embraces diversity. You see people from all over the world. When you have many people from different backgrounds gathered together, that is where innovation comes from.