Microsoft is a suite of applications which contains MS Word, Excel, Access, Publisher, PowerPoint, and Outlook. It enables users to send, save, edit, and view documents, presentations, notes, etc. The Office apps come with a spell checker, thesaurus, and many formatting options. Here, you can save your previous documents to complete it the next time. To download, install and activate the Microsoft Office setup with the product key, go to office.com/setup.