Declarative knowledge refers to the understanding of facts and information that can be consciously recalled and articulated. This type of knowledge includes knowing specific details, such as dates, definitions, and concepts. For example, knowing that Paris is the capital of France or that water boils at 100 degrees Celsius are instances of declarative knowledge. This knowledge is often contrasted with procedural knowledge, which involves knowing how to perform tasks or skills. Declarative knowledge is essential for learning and communication, as it provides the foundational information needed to engage in discussions, solve problems, and make informed decisions.