| A | B |
|---|
| archipelago | A group or chain of small islands |
| atoll | A horseshoe-shaped island formed by coral and surrounded by a lagoon. |
| river bank | The land along the sides of a river or canal. |
| canal | A man-made channel of water joining lakes or rivers, or connecting them with the sea. |
| cape | A large point of land that extends into a sea or an ocean. |
| cliff | A very steep or vertical slope. |
| butte | An isolated, rocky hill or mountain with a small flat top. |
| bay | A small area of sea or lake partly enclosed by dry land. |
| canyon | Larger than a gorge, a deep, steep-sided narrow valley with a flat bottom. |
| channel | A narrow passage of water connecting two larger bodies of water. |
| plain | Nearly flat region of land. |
| crater | The cup-shaped indention at the top of a volcano. |
| delta | The triangular area of sediments formed at the mouth of a river. |
| glacier | A large mass of slowly moving ice down a slope or valley. |
| iceberg | A mass of floating ice broken off from a glacier. |
| harbor | An area of water where ships, boats, and other watercraft can dock. |
| island | A body of land surrounded on all sides by water. |
| oasis | A place in a desert where there is a source of water that can support some plant life. |
| peninsula | A piece of land that is surrounded on three sides by water. |
| plateau | An elevated, mostly level area of land. |
| strait | A narrow body of water that connects two larger bodies of water. |
| valley | A U-shaped lowland between hills or mountains. |
| volcano | An opening in the earth's crust from which molten rock erupts. |
| mesa | An elevated piece of land with a flat top and steep sides. |
| geyser | A spout of water heated by molten rock underground. |
| prairie | Treeless plain, usually covered by tall grass. |
| gulf | A large inlet of ocean or sea that is partially surrounded by land. |
| lagoon | A shallow body of water separated from the ocean by reefs or low strips of land. |
| isthmus | A narrow strip of land that connects two larger bodies of land. |
| lake | A body of water completely surrounded by land. |
| mountain | A part of the land that rises at least 1,000 feet above the surrounding land. |
| mouth | The place where a river flows into a larger body of water. |
| tributary | A stream or river that flows into a larger stream or river. |
| swamp | A wetland similiar to a marsh but usually larger in area and supporting plant life, such as trees and shrubs. |
| cave | A hole beneath the surface of the earth. |
| peak | The highest point of a mountain. |
| mountain range | A chain of mountains. |
| stream | A small river. |
| river | A large stream that flows from a source to a larger body of water. |
| marsh | A low, water-soaked, poorly drained area with thick tall grasses and reeds. |
| range | A large area of open land. |
| desert | A barren land area containing little or no vegetation. |
| continent | A large mass of land surrounded by oceans. |
| hill | A part of the land that rises gently above the level of the surrounding land. |
| gorge | A V-shaped, steep-sided canyon, usually caused by swiftly flowing water. |
| forest | A large, dense growth of trees, plants, and underbrush. |
| ocean | A large body of salt water that separates land. |
| pond | A small body of fresh water. |
| reef | A ridge of sand, coral, or bedrock under water but near the surface. |
| fjord | A long, narrow inlet or arm of the ocean bordered by high cliffs. |
