Desire2Learn allows for instructors and course administrators to rename the tools within the learning environment. The following documentation illustrates this process with an example: changing the Dropbox tool's display name to "Assignment".
Log into you course and click the Edit Course link on the far right of the navigation bar.
Under the column Display Name you will be able to type the new name for you tool.
The display name will now be changed, as shown to the left with the Dropbox now being named Assignments.