GIF Animation Question:

What do you understand by animation?
Is there any difference between an animation & a video? Explain.
Give few examples of animation hardware & software.
What do you understand by a media authoring tool? Name few authoring tools for animations.
What is a twining animation?
What is rigging?
What is the number of the frames that must be shown per second to a human to cause an optical illusion of motion?
What do you understand by phenomenon of persistence of vision?
What is a motion picture? How is it different from animations?
Name few of the techniques used in the animation.