What's the Difference Between a Category and a Tag?

Categories are like chapters in a book, while Tags are more like the index of a book.

For example, a Post titled "Thoughts on the Passing of Steve Jobs" could be in the Categories of History & Technology and be given the Tags of Mac, iPhone, iPad, Design, Apple, History, and Steve Jobs.

The following table summarizes the key differences between Categories and Tags.

Content Broad topics Specific keywords
Organization Hierarchical Not hierarchical
Quantity Several Many

For more on the differences between Categories & Tags, take a look at Basic terms to know.