The article discusses the use of analytical categories like ”Folk Religion” and “Folk Religiosity” in studies of popular religious phenomena. A cluster of terms with similar definitions is identified and discussed, especially with regards to their dichotomic relations to another set of terms including Official Religion, Institutional Religion and Normative Religion. There are important keys to be found in the dichotomic relations between these terms with regards to how these concepts may be understood and function in scholarly works. As a specific term or set of terms may be integrated in a certain discourse, this involves also issues of power related to the choice of terms and how they are defined
