A topic is a grouping of information related to a concept, or a subject area. Topics provide a convenient means by which you can encapsulate knowledge, and make it available to end users as a shared resource. By adding topics to your Verity application, users can more easily perform searches over the subject matter which the topics represent.
Topics are combined to form knowledge bases that represent a catalogue of knowledge that users can tap into when performing searches. Knowledge bases offer users the ability to find the information they want without having to compose sophisticated queries using complex syntax.