1.Fully Observable vs. Partially Observable: An environment is fully observable if the agent's sensors provide complete information about its state. If the agent has limited or incomplete information, the environment is partially observable.
2.Deterministic vs. Stochastic: In a deterministic environment, the outcomes of actions are predictable. In a stochastic environment, there is an element of randomness or uncertainty.
3.Static vs. Dynamic: A static environment remains unchanged while the agent operates, while a dynamic environment can change over time.
4.Discrete vs. Continuous: An environment may have discrete states and actions, or it may involve continuous variables.