As the name says, this is an alphabetical list of terms and abbreviations used on this website, and in general by the RCC, with concise and precise explanations. Among the CT and P-CVE experts, professionals and activists, meaning of terms used is usually quite well understood. However, the experience has shown that the actual use of even the most basic terms (such as “terrorism” or “violent extremism”, for example) may vary considerably among users, causing sometimes unnecessary and sterile debates, and even misunderstandings. In order to avoid such scenarios, we added the Glossary. On the other hand, the RCC does not aspire to give scientifically/scholarly or politically exact and final definitions of terms – it is here only to help make communication easier and more efficient.