You can customize many of the field names to match the language/terminology that you use in your own organization. You also can change the user-defined field names to something more meaningful than just “Additional Field 1”, for example.
To make these changes, use the System Administration & Functional Settings section in the Admin/Config menu and select the Data Dictionary. Note that there are many tabs to look through to find the fields that you want. Enter the desired field label in the Override box. Tooltips can also be added which allow for a longer description of the field contents to be shown when you “mouse over” the field.