Crenulation is a word that refers to the formation of a series of small notches or serrations in a surface or an edge. There are several synonyms for crenulation that are used in different contexts, including notching, serration, scalloping, dentation, and incision. These terms are commonly used in biology, geology, and architecture to describe various features of structures, surfaces, and landscapes. For example, geologists often use the term crenulation to describe the deformation of rocks that have undergone folding and faulting, while architects use the term scalloping to describe the decorative notches or curves that are often found on the edges of buildings or roofs. Regardless of the specific context, the synonyms of crenulation all describe the same phenomenon of a surface or an edge being characterized by small, repeating notches or serrations.