A mountain chain, on the other hand, is a group of mountains that are connected by a common geological feature, such as a fault line or a river valley. Mountain chains can be part of a mountain range, or they can be independent of one. They are typically shorter and narrower than mountain ranges, and they can vary in length from a few kilometers to hundreds of kilometers.
In summary, the main difference between a mountain range and a mountain chain is their size and geological formation. Mountain ranges are larger and are formed when tectonic plates collide, while mountain chains are smaller and are connected by a common geological feature.