Copyright

Copyright is a intellectual property right that helps protect your work from being used by others without your permission. Intellectual property rights are automatic rights. This means that once you have created the idea or invention you have automatically gained these rights. However, no one can own an idea, not without creating something. Every idea has previously been inspired by something else. Copyright laws prevent other companies from using your work and making a profit from it.
By copyrighting your work you are allowing yourself to chose what happens to your work.

There are 4 major types of copyright:
Patent - Helps protect an invention or idea you made and prevents others from using the idea.
Designs - Help protect the visuals of the idea. Everything has been inspired by something else that someone else has created before you. By copyrighting you are able to decide how to tackle who
Trademark - Legally registered by use as representing a company or product.
All of these allow you to have the protection without applying for anything.