Motion Graphics are graphics that use video footage and/or animation technology to create the illusion of motion or rotation and are usually combined with audio for use in multimedia projects.
Visual effects supervision helps and directs in a right way for achieving the creative aims of the director and producers through the used of visual effects.
Match moving is a cinematic technique that allows the insertion of computer graphics into live-action footage with correct position,sale,orientation and motion relative to the photographed objects in the shot
Set extension is a technique to create impression of a more formidable setting in a continuity which helps in reducing the production costs
Term "clean plate" is basically live footages with certain unwanted objects removed wires,markers, un-needed people or even background.