katholikon
The main church in a monastic complex, heart of the monastic activity.

metochion
In the Byzantine period, metochion meant the estate that was conceded to a monastery for income purposes and operated as its dependency. Usually the metochia were located far from the monastery to which they belonged and included various structures, such as churches, hospices etc.

monitorial system
Teaching method developed by Joseph Lancaster, under which the older students (in Greek: “protoscholoi”) taught the smaller children some skill or activity.