A building's ________ is defined as its front or face.

The term used to describe a building's front or face is "facade." A facade serves not only as the exterior appearance of a building but also plays a vital role in architectural design because it can reflect the style, materials, and functions of the structure. The facade is often the most visually impactful aspect, influencing how the public perceives the overall character and aesthetic of the building.

In contrast, "elevation" typically refers to a two-dimensional representation of a building's vertical view, which can include multiple sides and is not limited to the front face. "Entrance" describes the specific point of access into the building, while "exterior" is a broader term that encompasses the outer surface of the entire structure, including walls, windows, and roofs. Therefore, the facade specifically designates the primary face of the building that is meant to engage viewers and define the overall impression.