Copyright is the legal right that protects someone's creative work from being copied or used by others without permission. When an author writes a book, a musician records a song, or an artist creates a painting, they automatically own the copyright to that work. This means other people can't just copy it, sell it, or claim it as their own.

Think of copyright as an invisible shield around creative work. If you write a story for class, you own the copyright to it. Your classmate can't photocopy your story and turn it in as their own work. Similarly, you can't copy pages from a published book and sell them, or download a song and put it in a video you're making money from without getting permission first.

Copyright exists to encourage creativity. If people could freely steal and profit from others' work, creators wouldn't want to spend time making books, music, art, or films. By protecting creators' rights, copyright helps ensure that people who work hard on original creations can benefit from them.

Copyright doesn't last forever. Eventually, creative works enter what's called the public domain, meaning anyone can use them freely. That's why you can read Shakespeare's plays or listen to Beethoven's symphonies without anyone's permission: those copyrights expired long ago. But newer works remain protected, usually for the creator's lifetime plus many decades after that.