| Term | Definition |
| River | large stream of water that empties into an ocean, lake or other river |
| Volcano | cone-shaped mountain formed by an outpouring of lava |
| Isthmus | narrow strip of land joining two larger bodies of land |
| Cape | narrow point of land that extends into a body of water |
| Basin | low-lying land area that is surrounded by land of higher elevation |
| Marsh | lowland with moist soils and tall grasses |
| Canyon | deep, narrow valley with high, steep sides |
| Hill | area of raised land that is lower and more rounded than a mountain |
| Peninsula | piece of land that is surrounded by water on 3 sides |
| Archipelago | chain of islands |
| Plains | large area of fairly level land that that is close to sea level |
| Steppe | flat, treeless land with limited moisture |
| Desert | area that has little or no moisture or vegetation |
| Canal | waterway made by humans that is used to drain or irrigate land or to connect to bodies of water |
| Coast | land that borders a sea or ocean |
| Continents | one of the largest bodies of land on earth |
| Mountain | high, steep, rugged land that rises sharply above the surrounding land |
| Prairie | large area of natural grassland with few or no trees or hills |
| Delta | land formed by soil that is deposited at the mouth of a river |
| Foothills | low rolling land at the base of a mountain range |
| Mouth | place where a river or stream empties into a larger body of water |
| Gulf | arm of an ocean or sea that is partly enclosed by land; usually larger than a bay |
| Island | land that is surrounded by water |
| Valley | land that lies between hills or mountains |
| Sea | large body of salt water that is smaller than an ocean |
| Plateau | large area of high, flat, or gently rolling land |
| Source | place where a river begins |
| Lake | body of water surrounded by land |
| Bay | part of a body of water that is partly enclosed by land |
| Continental Divide | mountain ridge that separates river systems flowing toward opposite sides of a continent |
| Tributary | stream or small river that flows into a larger river or stream |
| Strait | narrow channel of water that connects two larger bodies of water |
| Ocean | one of the 5 largest bodies of water on earth |
| Basin | land that is drained by a river |