Difference Between Trademark and Copyright?

According to the US Copyright Office FAQ, copyright "protects original works of authorship including literary, dramatic, musical, and artistic works such as poetry, novels, movies, songs, computer software and architecture. Copyright does not protect facts, ideas, systems, or methods of operation, although it may protect the way these things are expressed."

While copyright covers expressions of ideas, trademark covers logos and brand names. The US Patent and Trademark Office says that "A trademark includes any word, name, symbol, or device, or any combination, used, or intended to be used, in commerce to identify and distinguish the goods of one manufacturer or seller from goods manufactured or sold by others, and to indicate the source of the goods. In short, a trademark is a brand name."