Copyright infringement refers to the unauthorized use or reproduction of someone else's work protected by copyright laws. There are various synonyms for this term, which include piracy, plagiarism, infringement, theft, copying, and violation. Piracy refers to the illegal use or distribution of copyrighted materials. Plagiarism occurs when someone uses someone else's words or ideas without giving credit. Infringement is a broader term that covers various types of copyright violations. Theft is another synonym that emphasizes the illegality of copying someone else's work. Copying and violation are also used interchangeably to describe the act of unauthorized use or reproduction of copyrighted material.