The term "circular" refers to a shape that is round and has no corners or edges. It is defined by all points being equidistant from a central point. Common examples of circular objects include wheels, coins, and plates. In a broader context, "circular" can also describe processes or systems that are designed to be sustainable and minimize waste. This concept is often associated with the circular economy, which aims to keep resources in use for as long as possible by recycling and reusing materials.