Principles of Animation

1. Squash and Stretch: 
Is a technique used in animation to characterize an exaggerated animated motion. 

    
2. Timing and Motion:
 Refers on the timing of how the animation plays out and gives meaning to movement.

3. Anticipation: 
 Is the preparation for the action in the animation.

4. Staging:
 Is the presentation of action, personality or mood that is clear.

5. Follow Through and Overlapping Action:
Follow Through is the termination of an action and Overlapping is when you start a second action before the first action is finished.

6. Straight Ahead Action and Pose-to-Pose Action:
Straight ahead action is when an animator works straight ahead from the first drawing in a scene. In Pose-to-Pose Action is when an animator plans his action figuring out what drawings he'll need to animate the scene.

7. Slow In and Out:
The spacing in between frames at maximum positions

8. Arcs:

When all actions follow an arc path. 

9. Exaggeration:
Used in animation for visual effect and makes it look more extreme and surreal.

10. Secondary Action:
An action that results directly from another action. 

11. Appeal:
Giving a character charisma in order to be liked by the audience.

12. Personality: 
Giving particular traits to a character.