Capitals - Paired columns which usually have a square top and round base. These usually depict biblical scenes or legends of local saints.
Latin cross - most churches or abbeys would follow the shape of a Latin cross. The Latin cross is a universal symbol of Christianity.
Piers - columns were replaced with piers which were often used to provide support to arches. the piers are usually cruciform (cross-like) in shape when they intersect two big arches.
The thing that was heard before the armies then meet at the climax of so called the battle on ice in Alexander Nevsky would be a. a chorus singing a homophonic phrase. Hope this is the right answer and would be of help.