A knight who is an elite fighter, knights would protect lords, kings, and barrons.
Merchants
The roles of a King were to protect the kingdom, increase the wealth and trade of the kingdom, as well as to take care of the poor redistributing the tribute paid as necessary.
Nobles
Peasants worked the land to yield food, fuel, wool, and other resources. The countryside was divided into estates, run by a lord.
Watchman
A merchant is a company or individual who sells goods. A merchant will sell the goods to the customer for a profit, and by law, will have a duty of care to the customer
Nobles provided work, land, and protection to the peasants while providing funding, supplies, and military service to the king. Noble life was far from the ordinary life of the time.
a person who keeps guard over a building at night, to protect it from fire, vandals, or thieves.