Clip art, in the graphic arts, is pre-made images used to illustrate any medium. Today, clip art is used extensively in both personal and commercial projects, ranging from home-printed greeting cards to commercial candles. Clip art comes in many forms, both electronic and printed.
Stock images are pictures that designers use to illustrate publications. Generally, stock image providers require a per-image payment or a subscription, although some are free.
Vector graphics is the use of polygons to represent images in computer graphics. Vector graphics are based on vectors, which lead through locations called control points or nodes