| A | B |
| mountain | a high, uplifted area with steep slopes |
| canyon | a V-shaped valley eroded by a river. |
| plateau | a nearly level area that has been uplifted. |
| delta | A delta is a fan-shaped deposit at the mouth of river. |
| beach | A beach is a gently sloping shore next to a body of water, washed by waves or tides, often covered by sand or pebbles. |
| dune | a mound, hill, or ridge of wind-blown sand. |
| valley | a low area between hills and mountains, often where a river flows. |
| plain | a nearly level area that has been eroded or where material has been deposited. |
| floodplain | the land that gets covered by water from a stream or river during a flood. |
| meander | a curve or loop in a river. |