A proofreader and editor meticulously review written content to ensure accuracy, clarity, and coherence. They correct grammar, spelling, and punctuation errors, while also refining sentence structure and style. Their keen eye for detail helps eliminate inconsistencies and enhances overall readability. Additionally, editors may provide constructive feedback on content, suggesting improvements for coherence and effectiveness. Ultimately, their role is to polish and elevate written pieces, ensuring they meet the highest standards of quality and professionalism.