Concept Taxonomy
Using Taxonomies, you can set up the equivalent of a corporate thesaurus, an index table of contents or simply an outline of the information in the index. The Concept Taxonomy simply allows you to categorize the information in your index into topics, and search it accordingly.
The Concept Taxonomy is organized in a hierarchical "tree" format. The highest levels consist of the most general categories, with each level down becoming more specific:
Each concept can be configured so that its lower concepts will also be searched. Using the above example, if you want information about sick leave, you may use the general concept 'Time Off'. The concept can be set up to also search for the concept levels below it: Paid, Unpaid, Compensation Time, Illness etc.