Constitutional Council (France)
The Government of France consists of an executive branch (President of the Republic, Prime Minister, ministers, and their services and affiliated organizations), a legislative branch (both houses of Parliament), and a judicial branch. The judicial branch is, unlike for instance the federal judiciary of the United States under the Supreme Court, not organized into a single hierarchy (administrative courts fall under the Council of State, civil and criminal courts under the Court of Cassation), and some of its entities also have advisory functions. For historical reasons there has long been a hostility to having anything resembling a "Supreme Court"—that is, a powerful court able to quash legislation. Whether the Council is a court is a subject of academic discussion, but some scholars consider it the supreme court of France.
Judiciary of Greece
According to the Constitution, there are three categories of courts: civil courts, penal courts and administrative courts. The supreme court of the civil and penal justice is the Court of Cassation, while the supreme court of the administrative justice is the Council of State. Hence, Greek judges belong to one of these two branches. Consequently, an administrative judge is not entitled to judge a penal or civil case, while a civil judge is entitled to judge a civil or penal case but not an administrative one.