Semicircles are half circles that are often used in geometry or design. Some synonyms for semicircles include "half-moons", "semi-ovals", "arc segments", or simply "half-circles". These terms can be used interchangeably depending on the context in which they are used. For example, in architectural drawings, semicircles are often labeled as "arc segments" or "half-circles". In contrast, in natural settings, such as describing the shape of a rock or an object, "half-moons" or "semi-ovals" may be more appropriate. Regardless of the terminology used, semicircles often signify a sense of balance, harmony, or symmetry, which makes them a useful tool in a variety of design and artistic applications.