I don't believe so. Google has its own built in Word Document program that I actually find to be more user friendly than Microsoft Word. Google has its own built in Office programs, like Excel, Word, and Powerpoint (but with Google names obviously).
You can't use Word because you can't download the Office programs. You can however, use Google docs, which works like Word, although it does not have as many features. You can upload it from Google Docs onto another computer as a Word document though.