To understand politics, one must be familiar with the terms used in political discourse. The fundamental concepts of politics are essential for a basic understanding of the content and scope of political practice in time and space. The clear presentation of 33 key political terms provides an entry point into the foundational knowledge of politics, not only for political scientists specifically but also for social and cultural scientists in general. From democracy to integration to terrorism, the terminology is particularly highlighted with regard to its current dimensions and functions. The three terms added in the second edition—citizen, political correctness, and security—expand and deepen the systematic understanding, also considering aspects of relevance.