| A | B |
|---|
| Circulation | Short-term repetitive, or cyclical movements that recur on a regular basis. |
| emigration | Migration from a location. |
| immigration | Migration to a new location. |
| mobility | All types of movement from one location to another |
| net migration | The difference between the level of immigration and the level of emigration. |
| pull factor | Factor that induces people to move to a new location. |
| push factor | Factor that induces people to leave old residences. |
| refugees | People who are forced to migrate from their home country and cannot return because of fear. |
| migration | Form of relocation diffusion involving a permanent move to a new location. |
| flood plain | The area subject to flooding during a given number of years according to historical trends. |
| intervening obstacle | An environmental or cultural feature of the landscape that hinders migration. |
| forced migration | permanent movement compelled usually by cultural factors. |
