A segment on an editable spline that has its vertices set to Bezier or Bezier Corner is considered a Bezier Curve.
A curve modeled using a parametric polynomial technique. Bezier curves can be defined by many vertices. Each vertex is controlled by two other points that control the endpoint tangent vectors. Bezier curves were developed by P. Bezier for computer modeling in automobile design.
Bezier curve and the control points and tangent vectors about each vertex
A vertex on a Bezier Curve affects the entire curve in that area. Compare with B-splines, where the control vertices (CVs) affect only their local region of the curve or surface.