They belong to a category and they may have sub-classes of objects that inherit their characteristics and behaviors. Autonomy Objects are self-contained. We infer that they have internal states and processes based on how they appear and behave. The behavior and characteristics of an object's parts combine to produce the behavior of the whole object.
Objects ares self-contained.
They have everything they need to respond to incoming messages. Categorization We identify objects as belonging to categories of objects. We can predict the characteristics and behavior of an object based on those of its category.