| A | B |
| butte | flat tipped hill with steep sides; a column of rock |
| dune | mound or ridge of windblown sand |
| mesa | flat topped hill with steep sides; larger than a butte |
| oasis | a place in the desert where there is a source of water and where plants grow |
| plateau | flat topped hill with steep sides; larger than a mesa |
| mountain peak | summit or highest point of a mountain |
| mountain system | a group of mountain ranges |
| cape | a point of land that extends into the sea |
| elevation | height of the land above sea level |
| passage | another name for a channel; a body of water joining two larger bodies of water |
| strait | a narrow channel connecting two bodies of water |
| tributary | a small stream or river that flows into a larger one |
| desert | a dry region with little or no water |
| gulf | a large area of ocean that is partly surrounded by land |
| isthmus | a narrow strip of land having water on each side and connecting two larger bodies of land |
| mountain range | a group or chain of maountains |
| plains | a large flat area of land |
| archipelago | a group of islands |
| basin | land drained by a river |