What is the difference between U.S. Copyright protected and U.S. Copyright registered?

U.S. copyright protection comes in the moment your work is created and fixed in a tangible form that is perceptible either directly or with the aid of a machine or device. It provides you the right to stop another person from using your work without your permission. Meanwhile, U.S. Copyright registration is a means of security for your work when it is officially registered with the U.S. government. Registered works allow you to take legal action to obtain monetary value whenever someone claims and uses your work illegally.