The module is a set of courses on a specific topic. To complete a module and get your module credits you should accomplish different courses belonging to the module.

For lectures types of modules, you typically need both the lecture and the accompanying seminar.

For seminar types of modules, you typically need only one of the listed courses to complete the module.

But take care - there are some exceptions. Please check the module descriptions in the study regulations or ask the advising service for help.