A refugee camp is a temporary settlement built to receive refugees and people in refugee-like situations.
A refugee, generally speaking, is a displaced person who has been forced to cross national boundaries and who cannot return home safely.
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Refugee camps usually accommodate displaced persons who have fled their home country, but there are also camps for internally displaced persons.
An internally displaced person is someone who is forced to flee his or her home but who remains within his or her country's borders.
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Usually refugees seek asylum after they've escaped war in their home countries, but some camps also house environmental- and economic migrants.
An economic migrant is someone who emigrates from one region to another to seek an improvement in living standards because the living conditions or job opportunities in the migrant's own region are not good.
Camps with over a hundred thousand people are common, but as of 2012 the average-sized camp housed around 11,400.
They are usually built and run by a government, the United Nations, international organizations, or NGOs.
The United Nations is an intergovernmental organization to promote international co-operation.
There are also unofficial refugee camps, like Idomeni in Greece or the Calais jungle in France, where refugees are largely left without support of governments or international organizations.
The Calais "Jungle" is the nickname given to a refugee and migrant encampment in the vicinity of Calais, France.
Idomeni or Eidomene is a small village in Greece, near the borders with the Republic of Macedonia.
Refugee camps generally develop in an impromptu fashion with the aim of meeting basic human needs for only a short time.
Facilities that make a camp look or feel more permanent are often prohibited by host country governments.
If the return of refugees is prevented, a humanitarian crisis can result or continue.
A humanitarian crisis is defined as a singular event or a series of events that are threatening in terms of health, safety or well being of a community or large group of people.
According to UNHCR, the majority of refugees worldwide do not live in refugee camps.
The Office of the United Nations High Commissioner for Refugees, also known as the UN Refugee Agency, is a United Nations programme mandated to protect and support refugees at the request of a government or the UN itself and assists in their voluntary repatriation, local integration or resettlement to a third country.
At the end of 2015, some 67 per cent of refugees around the world lived in individual, private accommodations.
This can be partly explained by the high number of Syrian refugees renting apartments in urban agglomerations across the Middle East.
Syria, officially the Syrian Arab Republic, is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the west, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest.
Syrian refugees are people that are citizens and permanent residents of Syria who have fled from their country since the onset of the Syrian Civil War in 2011 and have sought asylum in other countries.
Worldwide, slightly over a quarter of refugees was reported to be living in plannedmanaged camp.
A small percentage of refugees also live in collective centers, transit camps and in self-settled camps.
In spite of the fact that 74 percent of refugees are in urban areas, the service delivery model of international humanitarian aid agencies remains focused on the establishment and operation of refugee camps.
Humanitarian aid is material and logistic assistance to people in need.