ED ED2 EA RD -- Can someone explain these and their differences?

Now that our kiddo has a competitive test score; we might start looking at a different group of schools other than our state school. Can someone explain these differences between ED ED2 EA RD and maybe some pros and cons of them all? THANK YOU!

Here is a link an earlier thread of mine in which I explain the differences and offer some pros and cons, with additional commentary on pros and cons by all the other people who posted on the thread. Hope it helps. Good luck to your child!

http://talk.qa.collegeconfidential.com/college-admissions/2079196-early-decision-and-early-action-p1.html