| Term | Definition |
| Migration | the movement of people from place to place |
| External Migration | moving to a new home in a different state, country, or continent |
| Emigration | The act of leaving a country to settle in another |
| Impelled Migration | individuals are not forced out of their country, but leave because of unfavorable situations such as warfare, political problems, or religious persecution. |
| Chain Migration | a series of migration within a family or defined group of people. often begins with one family member who sends money to bring other family members to the new location. |
| Return Migration | the voluntary movements of immigrants back to their place of origin. Also known as circular migration |
| Seasonal Migration | the process of moving for a period of time in response to labor or climate conditions. |
| Emigrant | a person who leaves a country or region to live elsewhere |
| Internally Displaced Person | a person who is forced to leave his or her home region because of unfavorable conditions but doesn't cross boundaries |