Which wall type would typically be nonbearing and only support itself?

Nonbearing walls are designed specifically to support their own weight and not the weight of any other structural elements. These walls provide separation between different areas of a building but do not carry loads from the roof or floors above. Their primary function is to provide space delineation and can be made of various materials, but they do not contribute to the overall structural integrity in terms of load-bearing.

In contrast, load-bearing walls are critical for the structural framework, as they transfer weight from above to the foundation. Party walls can serve both functions, as they may be load-bearing for the structure they are a part of, especially in shared buildings. Fire separations are designed to resist the spread of fire between different parts of a structure but can also be load-bearing or nonbearing depending on their construction. Thus, the defining feature of nonbearing walls is their role in supporting only themselves, which solidifies their identification as the correct answer.