Full context:   In Freemasonry, rituals are scripted words and actions which employ Masonic symbolism to illustrate the principles espoused by Freemasons. These rituals are progressively taught to entrusted members during initiation into a particular Masonic rite comprising a series of degrees conferred by a Masonic body. The degrees of Freemasonry derive from the three grades of medieval craft guilds; those of "Entered Apprentice", "Journeyman" (or "Fellowcraft"), and "Master Mason". In North America, Freemasons who have been raised to the degree of "Master Mason" have the option of joining appendant bodies that offer additional degrees to those, such as those of the Scottish Rite or the York Rite.