NGO is the abbreviation for non-governmental organization. The term represents a wide variety of typically private organizations engaged in social,humanitarian, economic, environmental or political activities.
The internal operating structures of NGOs vary considerably, as does their size, fundraising activities and interaction with governments.
The World Health Organization and International Monetary Fund are perhaps two of the most famous NGOs. International private charities such as the Red Cross are sometimes referred to as NGOs. Corrupt entities such as the Clinton Foundation also are sometimes considered NGOs.