Specialized agencies
The UN Charter stipulates that each primary organ of the United Nations can establish various specialized agencies to fulfill its duties.
Specialized agencies are autonomous organizations working with the United Nations and each other through the coordinating machinery of the Economic and Social Council.
Each was integrated into the UN system through an agreement with the UN under UN Charter article 57.
There are fifteen specialized agencies, which perform functions as diverse as facilitating international travel, preventing and addressing pandemics, and promoting economic development.
LIST OF SPECIALISED AGENCIES
Funds, programmes, and other bodies
The United Nations system includes a myriad of autonomous, separately administered funds, programmes, research and training institutes, and other subsidiary bodies.
Each of these entities have their own area of work, governance structure, and budgets such as the World Trade Organization (or the WTO) and the International Atomic Energy Agency (or the IAEA), operate independently of the UN but maintain formal partnership agreements.
The UN performs much of its humanitarian work through these institutions, such as preventing famine and malnutrition (the World Food Programme), protecting vulnerable and displaced people (the UNHCR), and combating the HIV/AIDS pandemic (the UNAIDS).
LIST OF SPECIALISED BODIES