Geography is the study of the land and how we use it. A geography lesson about your hometown would teach about the terrain, including any landforms like mountains or waterways, its vegetation, roads and other human-made developments, and its people.
Geography means "description of the earth's surface." It is often confused with a related word, geology, which means "study of the earth." Geography is about anything that happens on the ground, or above it, including how people live and use the land, while geology studies the earth's content, like the plates that form it and how they move.