You can customize the displayed names of attributes and risk levels in the Identity Governance interface. You can also customize the content in the templates for the email notifications.
Section 2.1, Customizing the Email Notification Templates
Section 2.2, Customizing the Collector Templates for Data Sources
Section 2.3, Customizing Categories
Section 2.4, Disabling Review Email Notifications
Section 2.5, Extending the Identity Governance Schema