| Term | Definition |
| archipelago | chain of many islands |
| bay | small area of sea/lake partly enclosed by land |
| butte | rocky hill/mountain with flat top |
| canyons | deep, narrow valley |
| cape | fairly large land extending into a body of water |
| cataract | large dramatic waterfall |
| cavern | large cave |
| cliff | very steep slope |
| continental divide | long mountain ridge lines |
| continental shelf | sloping margins on a continent |
| delta | sediments formed at the mouth of a river |
| desert | barren land area with little vegetation |
| fjord | large narrow inlet of ocean bordered by high cliffs |
| foothill | a hill at the base of a mountain |
| gulf | large inlet of ocean surrounded by land |
| island | land completely surrounded by water |
| isthmus | narrow strip of land that connects 2 larger lands |
| mouth | the place where a stream flows into a larger body of water |
| pass | a passage over mountains or hilly regions |
| peninsula | a piece of land completely surrounded by water |
| plain | large, flat area of land |
| plateau | an elevated, mostly level area of land |
| prairies | large area of grassland in U.S |
| swamp | deep marsh with trees |
| strait | narrow body of water connecting 2 larger bodies of water |
| savannas | tropical grasslands |
| steppe | vest treeless plains in SE Europe and Asia |
| tributaries | streams and rivers flowing into a larger river |
| tundra | a huge treeless plain bordering the Arctic Ocean |
| valley | a long, narrow hollow in the Earth's surface lying between two higher areas |