What is the nature of the res cogitans and how does it differ from the res extensa?

The res cogitans refers to the mind or consciousness, while the res extensa refers to the physical world or material objects. The res cogitans is characterized by thoughts, emotions, and perceptions, while the res extensa is characterized by physical properties like size, shape, and location. The main difference between the two is that the res cogitans is immaterial and subjective, while the res extensa is material and objective.