Webtrends Analytics 9 Adminstration Guide, November 2012
You can use Content Groups to identify and report on groups of pages on your site that have related subject matter. This allows you to measure visitor interest in different site areas and track visitor movement between content areas.
For example, you can create content groups for each major content section of a web site such as Corporate, Support, Products, and Search. Grouping pages by content means you can easily compare the traffic to each of these areas to determine which areas are most popular.