Cognitive content refers to the mental material or information that one processes or perceives. There are various synonyms that can be used to describe this term, such as cognitive information or knowledge. Another term that is often used is mental content, which refers to the thoughts or ideas that one holds within their mind. Alternatively, cognitive material or cognitive data can be used to describe the information or data that is being processed or analyzed. Finally, mental substance is another synonym for cognitive content, referring to the material that comprises one's mental faculties or intellectual capacity. Overall, there are numerous ways to describe cognitive content, each highlighting the importance of the information that is being processed and interpreted.