Plagiarism detection refers to the process of identifying instances where someone has copied or closely imitated another person's work without proper attribution. This can include text, images, or ideas taken from books, articles, websites, or other sources. Various tools and software, such as Turnitin and Grammarly, are commonly used in educational and professional settings to check for originality and ensure that proper credit is given. These tools work by comparing submitted content against a vast database of existing works, looking for similarities and matches. When potential plagiarism is detected, users receive reports highlighting the areas of concern, allowing them to revise their work accordingly. This process helps maintain academic integrity and encourages original thought in writing.