Hello, Could you help me? I got confused while trying to understand the difference between the words "rule" and "reugulation". As per my dictionary (Longman) "rule - an official instruction that says how things must be done or what is allowed, especially in a game, organization, or job"; "regulation - an official rule or order". Then what is the difference? Why do we say "rules of the forum" but not "regulations of the forum"? Thank you.