Which social group in medieval Europe comprised religious leaders such as bishops, priests, monks, and nuns?

The social group in medieval Europe that comprised religious leaders such as bishops, priests, monks, and nuns is known as the clergy. The clergy played a crucial role in medieval society, not only in spiritual rituals and guidance but also in education and the administration of various social services. They were often influential in politics and could wield significant power, especially higher-ranking officials like bishops. The clergy was distinguished from other social groups, such as the nobility and peasantry, and held a unique position due to their religious authority and the charitable responsibilities entrusted to them by the Church. This hierarchical structure within the clergy varied, with different levels of influence and responsibilities among its members.