Final answer:
Facades are nonstructural decorative fronts used on buildings, which differ from pilasters that are decorative rectangular columns without structural function.
Step-by-step explanation:
The correct answer is c) Facades. Facades are nonstructural facings or false fronts used either for decoration, as a form of paneling, to form a porch, or to serve as a protective overhang. They are purely aesthetic and do not contribute structurally to the building. Although a pilaster is also decorative and can give the illusion of support, it is specifically a rectangular column that projects partially from the wall and does not encompass the range of applications that facades do.