What is the difference between a hill and a mountain?

The main difference between a hill and a mountain lies in height, formation, and steepness. A mountain is a large natural elevation rising prominently above the surrounding terrain, usually over 600 meters in height. Hills are smaller and have gentle slopes with lower elevations. Mountains are often formed through tectonic activity, such as the collision of Earth’s plates, while hills can form due to erosion or accumulation of rock debris. Mountains often have steep, rugged landscapes, while hills are smoother and easier to climb. Despite size differences, both play important roles in shaping local climates and ecosystems.