Thanks for your response.
Yes, you can render Word documents using GroupDocs.Viewer. The way of rendering is similar for all the supported file formats. Following articles will help you on how to render a document using GroupDocs.Viewer.
In case you want to restrict the user to save the rendered content of the Word document when it is displayed to the user, then you can implement it at the front end level of the application as all the APIs at GroupDocs, including GroupDocs.Viewer, provide only back-end features to manipulate the documents. In case you want to apply protection directly on the Word document, you can use Protecting Document feature of Aspose.Words.