Leading representatives from sociology and educational science explain the key concepts of qualitative methodology and methods. In recent years, qualitative methods have gained significant importance in empirical social research. Especially among the younger generation of social science students, they have experienced a tremendous increase in popularity. Therefore, a clarification of the terminology is urgently needed. This is the aim of this volume, which provides clear and comprehensible explanations of the most important terms in qualitative methodology and methods through concise articles.