The term "carriage bow" is often used to refer to the curved metal or wooden bars that form an arch over the front of a carriage or coach. Other synonyms for this term include "carriage arch," "coach arch," and "carriage hood." These words are often used interchangeably, but each can have a slightly different connotation depending on the context. For example, "carriage arch" may be used to describe a more ornate or decorative arch, while "carriage hood" may refer to a collapsible hood that can be raised or lowered to protect passengers from the elements. Regardless of the specific term used, all of these words evoke the elegance and old-world charm of horse-drawn carriages and coaches.