What are the terms used to describe the curvature of the reflecting surface in concave and convex mirrors?

The curvature of the reflecting surface in concave and convex mirrors is described by the terms “concave surface” and “convex surface,” respectively. A concave mirror has a reflecting surface that curves inward, resembling the inner surface of a sphere, with characteristics such as a focal point and focal length. On the other hand, a convex mirror has a reflecting surface that curves outward, akin to the outer surface of a sphere, with its own focal point and focal length. These terms denote the fundamental geometric attributes of the mirror surfaces, influencing the reflection and formation of images in optical systems.