Between or Among?
Among, Amongst, Between
Between = 2 items
Amon = 3+ items
1. The bill was split between Frank and Mark.
2.Between you and me, I think Jane should tell her mom the truth.
Between you and I(x) ~.
3. Among the books, I saw an old photo.
4. I walked among the trees.
Group/Mass Noun
1. I must choose among universities in Canada.
2. There was an agreement among all members.
3. Trade agreements exist among countries.
Individual Relationships
1. I must choose between university of Toronto, UBC and McMaster university.
2. There was an agreement between members of the JB fan club, KP fan club and Black Sabbath fan club.
3. There is a trade agreement between Mexico, Canada and the US.
Difference - use between
Distribute - use among
Location - between = specific path or point
There is a difference between ~
The tips were distributed among ~
Bolivia lies between Chile, Peru, Brazil, Argentina and Paraguay.
I walked between the trees and the house.
Among = no defined path
I'm among the trees.
(I don't know where I am)
Amongst - Talk amongst yourselves.
Among = included in
Among those in the audience was Arnold.
Among = one of
Lake Huron is among the largest lakes in the world.
There is a difference between then and then.
We have a traitor among us.
Between cooking, studying and working, I have no time to play video games.
References
http://www.engvid.com/between-or-among/