Final answer:
A cloister refers to either an enclosed area within a monastery or convent, or an open area surrounded by a covered walkway, specifically next to a cathedral.
Step-by-step explanation:
An enclosed place, especially the land surrounding or beside a cathedral, is known as a cloister.The land surrounding or beside a cathedral is called a cloister. A cloister is an area within a monastery or convent that is typically restricted to religious individuals. It is often an enclosed area surrounded by a covered walkway. The cloister provides a peaceful and contemplative space for monks or nuns to pray and meditate. This term refers to an area within a monastery or convent to which the religious are normally restricted or, more specifically, an open area surrounded by a covered walkway. The other terms provided have different meanings related to a cathedral's structure: an atrium is an open-roofed entrance hall or central court in an ancient Roman house, a nave is the central aisle of a basilica, and a choir is the space behind the altar of the church.