A context server is a software component that provides contextual information to other applications. It is also known as a content server, context broker, metadata server, or context manager. A content server is a system that helps in managing digital content through various channels; a context broker is responsible for managing contextual data and provides them to other applications in real-time. A metadata server is used for managing and storing metadata related to digital content. A context manager is a system that manages the context of the user's actions and provides personalized recommendations based on their context. Overall, these synonyms represent the various roles that a context server plays in providing relevant and personalized information to applications.