A punctuation error occurs when the correct symbols used in writing, such as commas, periods, or question marks, are missing, misplaced, or used incorrectly. These errors can change the meaning of a sentence or make it difficult to understand. For example, the sentence "Let's eat, Grandma!" conveys a friendly invitation, while "Let's eat Grandma!" suggests something quite different. Common types of punctuation errors include run-on sentences, comma splices, and incorrect use of apostrophes. Proper punctuation is essential for clear communication in writing, whether in academic papers, emails, or social media posts. Understanding and correcting these errors can improve overall writing quality.