What were the economic roles of serfs, nobles, clergy’s, merchants, monarchs, knights, artisans?

what were the serfs, nobles, clergy’s, merchants, monarchs, knights, artisans place in the social hierarchy?

what were some challenges faced by serfs, nobles, clergy’s, merchants, monarchs, knights and artisans groups.

what were the potential benefits of belonging to serfs, nobles, clergy’s, merchants, monarchs, knights, artisans groups.

Serfs - They served a noble vassal who allowed them to stay at their estate. In return, they worked hard in order to repay their stay. They had no power over politics and control of property.
Nobles - They were rich subjects who were granted land by the monarch. In return, they would provide men, arms, and money to the royal crown.
Clergy - They were influential in terms of the decisions made by political leaders. They did not power but they had influence.
Merchants - They set up businesses in towns and traded different goods. They allowed people to improve their skills in making products.
Knights - They served a lord by accompanying them in court and protecting them. They also watched over the lord's manor and all the activities.
Artisans - They were people who were skilled in making important everyday goods, such as shoes, clothes, and liquor.

Assuming this is a question on a test just name a restaurant by your house and the state you live in, its not too difficult : )