AngularJS Multiple ng-app within a page

var shoppingCartModule = angular.module("shoppingCart", [])
shoppingCartModule.controller("ShoppingCartController",
  function($scope) {
    $scope.items = [{
      product_name: "Product 1",
      price: 50
    }, {
      product_name: "Product 2",
      price: 20
    }, {
      product_name: "Product 3",
      price: 180
    }];
    $scope.remove = function(index) {
      $scope.items.splice(index, 1);
    }
  }
);
var namesModule = angular.module("namesList", [])
namesModule.controller("NamesController",
  function($scope) {
    $scope.names = [{
      username: "Nitin"
    }, {
      username: "Mukesh"
    }];
  }
);
angular.bootstrap(document.getElementById("App2"), ['namesList']);

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.3/angular.min.js"></script>

<div id="App1" ng-app="shoppingCart" ng-controller="ShoppingCartController">
  <h1>Your order</h1>
  <div ng-repeat="item in items">
    <span>{{item.product_name}}</span>
    <span>{{item.price | currency}}</span>
    <button ng-click="remove($index);">Remove</button>
  </div>
</div>

<div id="App2" ng-app="namesList" ng-controller="NamesController">
  <h1>List of Names</h1>
  <div ng-repeat="_name in names">
    <p>{{_name.username}}</p>
  </div>
</div>