This document defines and provides brief descriptions of different types of landforms. It explains that mountains are the highest kind of land with peaks, hills rise above surrounding land with rounded tops, islands are surrounded by water, deserts are dry with few plants due to lack of rain, rivers are long bodies of flowing water through land, lakes are bodies of water surrounded by land, oceans are large bodies of salty water covering large areas, plains are flat land, valleys are low land between hills or mountains, and plateaus are large elevated areas rising steeply above surrounding land.