Geomorphology is the study of landforms and their origins. What geomorphological processes established the landforms in the area where you live?
For instance, I live in the Delmarva Penninsula*. (Technically, we’re an island since they built the C&D Canal*.) We’re part of the Atlantic Coastal Plain*, which is formed of sediment running down from the Appalachian Mountains*. Since it’s mostly sedimentary ground, much of it is fertile farmland. To our west is the Chesapeake Bay*, which has over 150 rivers that flow into it; and to our east is the Atlantic Ocean. The tectonic* processes formed the mountains and fluvial* processes washed the sediment down towards the ocean, and formed the bay. The canal was man-made though.
*Look up these terms in Wikipedia if you want more information.