What is the difference between 'reign' and 'rule'?

Question

The answer I am looking for should be more of an academic nature and in the context of 'Governing' and/or 'regulating' the Internet and/or Cyberspace.

Answer 1

Reign

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Royal authority; supreme power; sovereignty; rule; dominion.

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The territory or sphere which is reigned over; kingdom; empire; realm; dominion.

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The time during which a king, queen, or emperor possesses the supreme authority; as, it happened in the reign of Elizabeth.

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To possess or exercise sovereign power or authority; to exercise government, as a king or emperor;; to hold supreme power; to rule.

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Hence, to be predominant; to prevail.To have superior or uncontrolled dominion; to rule.

http://www.brainydictionary.com/words/re/reign211578.html

I can't find anything for Rule. But this is my best I tryed