1. In division, with shares to each
   "the top leadership divides the spoils between themselves";
   - among, amongst
    
2. Internal to, involving members of (a group of people)
   "they argued between themselves";
   - among, amongst, within

1. In between; in the middle
   "dancing all the dances with little rest between";
   - betwixt [archaic]
    
2. In between
   "two houses with a tree between";
   - 'tween [literary]

Encyclopedia: Between, Georgia