rootscope vs scope code example

Example 1: difference between scope and rootscope

angular.module('example', [])
  .controller('GreetController', ['$scope', '$rootScope',
    function($scope, $rootScope) {
      $scope.name = 'World';
      $rootScope.department = 'Angular';
    }
  ])
  .controller('ListController', ['$scope',
    function($scope) {
      $scope.names = ['Igor', 'Misko', 'Vojta'];
    }
  ]);

Example 2: difference between scope and rootscope

angular.module('example', [])
  .controller('GreetController', ['$scope', '$rootScope',
    function($scope, $rootScope) {
      $scope.name = 'World';
      $scope.department = 'Angular';
    }
  ])
  .controller('ListController', ['$scope',
    function($scope) {
      $scope.names = ['Igor', 'Misko', 'Vojta'];
    }
  ]);