Answer AngularJS modules are containers just like namespace in C#. They divide an angular app into small, reusable and functional components which can be integrated with other angular app. Each module is identified by a unique name and can be dependent on other modules. In AngularJS, every web page (view) can have a single module assigned to it via ng-app directive.
Creating an AngularJS module <script type="text/javascript">
//defining module
angular.module('myApp', []);
//OR defining module which has dependency on other modules
angular.module('myApp', ['dependentModule1', 'dependentModule2']);
</script>
Using an AngularJS module into your app
You can bootstrap your app by using your AngularJS module as given below:<html ng-app="myApp">
<head> ... </head>
<body> ... </body>
</html>