| A | B |
| archipelago | a group of islands |
| bay | a small area of ocean partly surrounded by land |
| canal | a waterway dug across land |
| cape | a piece of land that sticks out into a lake or sea |
| delta | a soil deposit at a river's mouth, usually triangle-shaped |
| gulf | a large area of ocean partly surrounded by land |
| island | land completely surrounded by water |
| isthmus | a narrow strip of land connecting two larger land areas |
| mountain range | a row of connected mountains |
| peninsula | land surrounded by water on three sides |
| plateau | an area of high, flat land |
| strait | a narrow body of water between two larger bodies of water |
| tributary | a river or stream that flows into a larger river |
| valley | low land between mountains or hills |
| desert | a dry, barren region that may be sandy and without trees |
| river | a large stream of water that flows into a lake, ocean, or other body of water |
| volcano | opening in Earth's crust from which lava flows |
| glacier | large, slow-moving mass of ice |
| mouth | place where a river flows into a lake or ocean |