* Flee: To escape quickly, implying a change in location and possibly state of being (from danger to safety).
* Operate: To function or work, suggesting a change from inactivity to activity.
* Melt: To become liquid, implying a change in physical state.
* Unravel: To become undone or disentangled, suggesting a change from a whole state to a fragmented state.
While they don't all describe the same type of change, they all involve a shift from one state to another.