Customs Union
A trading area covering two or more countries that agree to abolish internal tariffs and restrictions on the amount of trade (such as quotas), and have a common external tariff and other common trade controls.Notes
Not to be confused with a free trade area - which has no common customs and nocommon trade policy.
-The EU is a customs union
-EFTA is a free trade area
Links
http://europa.eu.int/comm/taxation_customs/index_en.htm
