A point of inflection is a term used in mathematics to describe the point at which a curve transitions from being concave upwards to concave downwards, or vice versa. There are several synonyms for this term, including turning point, bend, flexure, inflection point, and inflexion. Each of these terms describes the same concept, but from a slightly different perspective. For example, a turning point implies a change in direction, while a bend suggests a gradual change in curvature. Regardless of the synonym used, a point of inflection represents an important concept in mathematics, physics and engineering, and is often used to describe transitional phases of various systems or processes.