Animation is the process of making the illusion of motion and the illusion of change by means of the rapid display of a sequence of images that minimally differ from each other. The illusion—as in motion pictures in general—is thought to rely on the phi phenomenon. Animation can be recorded with either analogue media, a flip book, motion picture film, video tape, digital media, including formats with animated GIF, Flash animation, and digital video.
Animation creation methods include the traditional animation creation method and those involving stop motion animation of two and three-dimensional objects, paper cutouts, puppets and clay figures. Images are displayed in a rapid succession, usually 24, 25, 30, or 60 frames per second. Computer animation processes generating animated images with the general term computer-generated imagery (CGI). 3D animation uses computer graphics, while 2D animation is used for stylistic, low bandwidth and faster real-time renderings. — Wikipedia