I'm currently writing my masterthesis (in german) and am using biber in combination with jabref for my citations. I have some citations related to "Masterarbeiten" and "Diplomarbeiten", for which I chose the category "masterthesis". Now, when the bibliography is created in german language, instead of "Masterarbeit" "Magisterarbeit" is shown in the document. This is not correct and so I would like to change this. What do I have to do to change this, so that "Masterarbeit" will be written instead of "Magisterarbeit"? And secondly: What do I have to do if I want to create a second category, so that I can distinguish between the citation of a "Diplomarbeit" and a "Masterarbeit"?
I appreciate any help!