What is the difference between resit and remodule?

A re-sit is defined as an additional attempt of an assessment without attendance of class again. Do note that you should not have too much similarities of that from your first submitted work, or that will count as self-plagiarism. 

A re-module is defined as a re-study of the module with attendance, including the completion of all assessments for that module. A student may be eligible for a re-sit of a module being retaken subject to the re-sit regulations below.

The retake mark overrides any previous mark for the same module, no mark or credit may be carried forward from a previous attempt. Students are required to pay a module fee to retake a module.