Relief
Relief explained in an easy to understand way:
Imagine trying to arrange a set of books on a shelf so that they all stand evenly, but some are taller and some are shorter. This is similar to how relief in geography describes the difference in elevation between the high and low parts of an area. Just as you notice the varying heights of books, relief highlights the varying elevations like hills and valleys in a landscape, where the tallest book represents the highest elevation and the shortest book represents the lowest elevation.
Practice Version
Relief: Difference in elevation between the high and low parts of an area. Relief. In Science, relief refers to the variations in height and slope of the Earth's surface.