| A | B |
| tributary | streams that flow into a river |
| river mouth | place where a river flows into a larger body of water |
| canyon | large crater in the earth |
| gorge | river flowing through a large crevass |
| wet lands | place where wild birds live |
| coastal area | place where a body of water meets the shoreline |
| forest | place where trees and other vegitation grow in abundance |
| desert | dry, arid place, not near a body of water |