This document discusses plagiarism, defining it as representing someone else's words or ideas as one's own without proper citation. It describes intentional plagiarism as knowingly acting unethically to pass off another's work as one's own, usually due to laziness or desperation. Unintentional plagiarism occurs through ignorance, such as failing to cite sources or use quotation marks. Both are considered plagiarism. The document provides examples and emphasizes the importance of citing sources to avoid plagiarism in academic work.