What is the difference between an entity and a domain in the Mange Websites tab?

The Manage Websites tab in Direct allows you to display the websites you are tagging by comScore Dictionary Entity or domain. The domain is the value as seen exactly in the address bar of the browser from which the tag request is fired. Entities as reported in the comScore Dictionary may reflect the exact name of the domain or be named slightly differently as reflected in Media Metrix reporting.