The word "curve" typically refers to a line or shape that is not straight, but instead has a gradual slope or bend. Synonyms for curve include "arch," "bend," "curl," "turn," "twist," "loop," "arc," "swirl," and "winding." These words are often used to describe the shape of objects or the path of movement. For example, a river might have a gentle curve as it winds through a valley, or a dancer might move in graceful curves and twists. Using different synonyms for "curve" can add variety and interest to your writing, allowing you to paint a more vivid picture for your readers.