This document defines and provides examples of different types of landforms and physical regions. It discusses 8 major regions: 1) mountain, 2) valley, 3) river basin, 4) desert, 5) plains, 6) coastal plain, 7) island, and provides information on key landforms within each region, such as mountains, plateaus, valleys, deltas, mesas, buttes, peninsulas, bays, gulfs, seas, islands, straits, and isthmuses. Examples are given for many of the landforms.