Glossary – European Union and European Institutions

European Union and European Institutions

Introduction

The European Union (EU) is a unique regional political and economic organization created through a long process of European integration. It combines elements of intergovernmental cooperation with significant forms of supranational decision-making.

The EU has developed institutions that exercise authority in areas transferred to the European level by its member states. Its institutional system includes legislative, executive, judicial, monetary and auditing functions.

The EU is therefore neither simply a traditional international organization nor a sovereign state. It is often described as a sui generis political and legal system, meaning that it has distinctive characteristics that do not fit neatly into conventional categories.

Core Concepts

European Union
A political and economic union of European states established through treaties that provide common institutions, policies and legal frameworks.

European Integration
The process through which European states develop common institutions, policies, markets and legal arrangements.

Supranationalism
A system in which states authorize common institutions to exercise certain powers above the purely national level.

Intergovernmentalism
A mode of cooperation in which national governments retain the central role in decision-making.

The EU contains both elements.

EU Institutional Framework

The EU has seven formal institutions:

  1. European Parliament
  2. European Council
  3. Council of the European Union
  4. European Commission
  5. Court of Justice of the European Union
  6. European Central Bank
  7. European Court of Auditors

The EU itself describes these as the seven institutions established within its treaty framework.

European Parliament

The European Parliament represents EU citizens.

Its principal functions include:

  • participating in EU legislation
  • exercising democratic scrutiny
  • approving the EU budget
  • scrutinizing the European Commission
  • representing citizens at the EU level

The Parliament works with the Council of the European Union in the ordinary legislative procedure.

European Council

The European Council brings together the heads of state or government of EU member states.

Its principal function is to provide:

  • strategic direction
  • political priorities
  • high-level coordination

It should not be confused with the Council of the European Union.

The European Council generally does not function as an ordinary legislative body.

Council of the European Union

The Council of the European Union, commonly called the Council, represents the governments of member states.

National ministers meet in different configurations depending on the subject.

It participates with the European Parliament in adopting EU legislation.

European Commission

The European Commission represents the general interests of the EU and performs major executive and policy functions.

Its responsibilities include:

  • proposing legislation
  • implementing EU policies
  • managing important parts of the EU budget
  • monitoring application of EU law
  • representing the EU in certain external areas

The Commission has a central role in initiating EU legislation.

Court of Justice of the European Union

The Court of Justice of the European Union (CJEU) ensures that EU law is interpreted and applied consistently.

It can:

  • interpret EU law
  • review the legality of EU institutional acts
  • address member-state compliance with EU obligations
  • respond to questions referred by national courts

European Central Bank

The European Central Bank (ECB) is the central institution responsible for monetary policy in the euro area.

Its principal monetary-policy objective is price stability.

The ECB is part of the broader institutional architecture of European monetary integration.

European Court of Auditors

The European Court of Auditors examines the collection and spending of EU funds.

It contributes to:

  • financial accountability
  • transparency
  • sound financial management
  • auditing of EU finances

Single Market

The European Single Market is an integrated economic area intended to facilitate the movement of goods, services, capital and people.

These are commonly called the Four Freedoms:

  1. Free movement of goods
  2. Free movement of services
  3. Free movement of capital
  4. Free movement of persons

The Single Market is one of the central achievements of European economic integration.

Customs Union

The EU Customs Union involves common customs rules for trade with non-EU countries and the removal of customs duties between participating EU member states for goods covered by the customs framework.

It should not be confused with the broader Single Market.

Eurozone

The Eurozone is the group of EU member states that use the euro as their currency.

Therefore:

European Union ≠ Eurozone

Not every EU member state uses the euro.

Schengen Area

The Schengen Area is an area in which participating countries have removed routine internal border controls between participating states.

It is related to European integration but is not identical to EU membership.

Thus:

EU membership ≠ Schengen membership

Common Foreign and Security Policy

The Common Foreign and Security Policy (CFSP) is the framework through which EU member states cooperate on foreign and security matters.

It differs from many internal EU policy areas because national governments retain an especially important role.

Common Security and Defence Policy

The Common Security and Defence Policy (CSDP) provides a framework for EU activities relating to security and defence, including civilian and military missions.

It should not be confused with NATO’s collective-defence system.

Qualified Majority Voting

Qualified Majority Voting (QMV) is a voting procedure used in specified areas of EU decision-making.

It allows decisions to be adopted without requiring unanimous support from every member state when treaty rules provide for qualified majority voting.

Unanimity

Unanimity means that all participating member states must agree for a decision to be adopted.

Certain sensitive areas of EU policy retain unanimity requirements.

Subsidiarity

Subsidiarity is the principle that decisions should be taken at the EU level only when action at that level can achieve objectives more effectively than action at the national, regional or local level, where the treaties require or permit EU action.

It is an important principle governing the allocation of authority.

Acquis Communautaire

Acquis communautaire, commonly called the EU acquis, refers to the body of EU law, rights, obligations, rules and institutional practices that EU member states and candidate countries must accept within the applicable framework.

EU Enlargement

EU Enlargement refers to the process through which additional European states become members of the European Union.

Candidate states are required to satisfy political, economic and legal conditions established through the EU accession framework.

Copenhagen Criteria

The Copenhagen Criteria are the principal conditions associated with EU membership.

They concern areas such as:

  • stable democratic institutions
  • rule of law
  • human rights
  • protection of minorities
  • functioning market economy
  • capacity to implement EU obligations

Article 50 and Withdrawal

Article 50 of the Treaty on European Union establishes the procedure through which a member state may withdraw from the EU.

The United Kingdom’s withdrawal became known as Brexit.

Cohesion Policy

EU Cohesion Policy seeks to reduce economic and social disparities among regions and support balanced development within the Union.

It represents an important dimension of EU regional policy.

Common Agricultural Policy

The Common Agricultural Policy (CAP) is the EU framework for agricultural policy.

Its broad objectives include supporting agriculture, maintaining agricultural markets and contributing to rural development.

European Strategic Autonomy

European Strategic Autonomy refers to the capacity of the EU and its member states to act with greater independence in strategically important areas.

The concept can encompass:

  • defence
  • energy
  • technology
  • supply chains
  • economic security
  • foreign policy

The precise meaning varies according to policy context.

EU External Action

The EU maintains relationships with states and international organizations through:

  • diplomacy
  • trade
  • development cooperation
  • sanctions
  • humanitarian assistance
  • neighbourhood policy
  • security and defence cooperation

The EU therefore functions not only as an internal regional market but also as an important international actor.

Key Distinctions

Concept Meaning
European Union Political and economic union
European Council Heads of state or government providing strategic direction
Council of the EU National ministers representing member governments
European Commission EU executive and legislative-initiative institution
European Parliament Institution representing EU citizens
CJEU Judicial institution interpreting and enforcing EU law
ECB Central institution of euro-area monetary policy
Eurozone EU countries using the euro
Schengen Area Area based on the removal of routine internal border controls
Single Market Integrated economic area based on major freedoms of movement
Customs Union Common customs framework
Supranationalism Authority exercised through common institutions above the purely national level
Intergovernmentalism Cooperation centred on national governments
Acquis Body of EU law and obligations
CFSP EU foreign and security policy framework
CSDP EU security and defence framework

Key Terms at a Glance

European Union, European Integration, Supranationalism, Intergovernmentalism, European Parliament, European Council, Council of the European Union, European Commission, CJEU, ECB, European Court of Auditors, Single Market, Four Freedoms, Customs Union, Eurozone, Euro, Schengen Area, CFSP, CSDP, Qualified Majority Voting, Unanimity, Subsidiarity, Acquis Communautaire, Enlargement, Copenhagen Criteria, Article 50, Brexit, Cohesion Policy, Common Agricultural Policy, Strategic Autonomy

Related Glossaries

  • International Organizations and Global Governance
  • Multilateralism and Global Governance
  • International Political Economy: Core Concepts
  • International Trade and Protectionism
  • NATO and European Security
  • Major Powers and Global Powers
  • Regional Organizations and Strategic Groupings
  • Global Governance and International Cooperation

Conclusion

The European Union represents one of the most developed examples of regional integration in modern international relations. Its importance lies not only in economic integration but also in its distinctive institutional structure, common legal framework and capacity for coordinated action.

Understanding the difference between the European Council, Council of the EU, European Commission and European Parliament, as well as the distinction between the EU, Eurozone, Schengen Area and Single Market, is fundamental to understanding contemporary European politics and international relations.

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