I am reading a document about Bézier splines. A Bézier spline seems to be a combination of low-degree (typical 2, 3 or 4) Bézier curves. Reading the Wikipedia article about composite Bézier curves, it seems to me that Bézier splines and composite Bézier curves are two expressions to refer to the same concept. Is this correct? If not, what's the difference between them?