The Crystal Cathedral

4. The church of a diocesan bishop is known as a "cathedral".
5. A church to which other diocesan cathedral churches of a province are suffragan is a "metropolitan cathedral".
6. A church under which are ranged metropolitical churches and their provinces is a "primatial cathedral".
7. A church to which primatial, metropolitical, and cathedral churches alike owe allegiance is a "patriarchal cathedral".