The ‘European Council’ should not be confused with the ‘Council of the European Union’ as these are two distinct entities within the institutional framework of the European Union, each with its own specific role and function.

The ‘European Council’ (EUCO) is an institution of the European Union, that is composed of the heads of government (prime ministers) of EU member states, the President of the European Council, and the President of the European Commission. The European Council defines the general political directions and priorities of the European Union. The European Council does not adopt laws except for possible amendments to EU treaties. The European Council is a separate institution from the Council of the European Union, the latter being composed of ministers of the EU Member States.

The ‘European Council’ should not be confused with the ‘Council of Europe’ (CoE), which is an international organization seated in Strasbourg, France, and not affiliated with institutions of the European Union.

Wikipedia article about the ‘European Council’.