Spanish History Notes

Seating joints with beveled and recessed? What is THAT?
It is both a matter of language and art. Do not even know what might be called in English, as only history of Spanish art is in Spanish. He appeared on an exam, but I can not find the answer among the 50 + pages of notes I have.
Seating or "the choir stalls is a set of wooden chairs (Chairs) sometimes finely carved and decorated and joined one another, used by the choirs in the church or monasteries. In English, one seating "is called" choir stalls. " There, members of a choir or sitting foot during a religious service. There are also other "Seating": a group of "blocks" (blocks of stone, masonry), created by forming a wall. "Together", "discounted" and "beveled" are words used in carpentry (the first meaning of seating), but also in masonry (second meaning). A "board" is a joint, a point where two or more parties met. Reduced means "cutting" decreased, reduced. means that the beveled edge or the tip of some surfaces have been cut obliquely, or forming an angle.