Ghost has a flexible organisational taxonomy called tags which can be used to configure your site structure using dynamic routing.

Basic Tagging

You can think of tags like Gmail labels. By tagging posts with one or more keyword, you can organise articles into buckets of related content.

When you create content for your publication you can assign tags to help differentiate between categories of content.

For example you may tag some content with  News and other content with Podcast, which would create two distinct categories of content listed on /tag/news/ and /tag/weather/, respectively.