â–º Initial State: This state shows the first activity of the flow.

â–º State: A state represents the state of an object at a particular given point of time.

â–º Transition: The transition from one state to another state of objects is represented by an arrow.

â–º Event and Action: A trigger that causes a transition to occur.

â–º Signal: When a message or a trigger caused by an event to a state, which causes a transition, this message is called as a signal.

► Final State: The state diagram ends with a diagram that depicts a bull’s eye is known as Final State.