Content systems vs. content guidelines
Content guidelines provide rules and best practices for writing, covering grammar, style, and voice. They tell content designers what to do but not necessarily how to implement it systematically. Think of them as the theory behind good content and messaging.
Content systems take guidelines further by creating actionable frameworks and reusable components. They include content patterns, templates, and decision trees that designers and writers can apply directly. Systems show exactly how to handle specific scenarios like form validation, empty states, or push notifications.
The key difference lies in scalability and application. Guidelines might recommend that error states should help users recover quickly, while systems provide the complete content architecture: the visual hierarchy, the information sequence, the contextual help placement, and the specific pattern: "[What happened]. [Why it happened]. [What to do next].