Difference between Factory and Service

factoryAndService.js

/* Difference between Factory and Service
 * 
 * Nate: All services used in AngularJs(Service, Factory) are singleton, 
 *       because was created to share app information.
 */

function obj() {
   this.properties = 1;
   this.properties2 = 1;
}


var myApp = angular.module('myApp', [])
  .service('myService', obj)
  .factory('myFactory', function() {
      return obj;
  })
  .controller('myController1', function($scope, myFactory, myService){
      myService.properties = 42;
      myService.properties2 = 42;
      
      $scope.myService = myService;
      $scope.myFactory = new myFactory();
      
      $scope.myFactory.properties = 42;
      $scope.myFactory.properties2 = 42;
  })
  .controller('myController2', function($scope, myFactory, myService){
      console.log(myService.properties); //Console 42
      console.log(myService.properties2); //Console 42
      
      console.log(new myFactory().properties); //Console 1
      console.log(new myFactory().properties2); //Console 1
      
      $scope.myService = myService;
      $scope.myFactory = new myFactory();
      
  });