Ambo: a pulpit (pl. ambones)
Ambulatory: curving aisle around the apse of a church, usually lined with chapels
Ancona: a painted or sculpted altarpiece, especially one set in an architectural frame
Atrium: entrance court of an ancient Roman house or an early church
Arca: a monumental tomb or sarcophagus
Baldacchino: baldachin, a columned stone canopy over an altar
Basilica: a rectangular building, usually divided into three aisles by two rows of columns. In ancient Rome, this was the common form for law courts and other public buildings, and Roman Christians adopted it for their early churches. Today, the term is an honorific in Catholicism, meaning an important church endowed with special privileges.
Borgo: from the Saxon burh; a suburb or village