I must say, you really need to learn some things about managing folders and files on a computer, about uninstalling software, and about freeing up disk space before you go removing such things. With your level, or lack, of knowledge, you should have sought help when you saw that "low on memory" message rather than attempt to resolve it yourself. End of sermon.
Uinstalling Word would not delete the files created with it, unless you also deleted them in a separate action. When a new file is saved in Word, the file saved under the name assigned to it, with the "extension", doc, attached to it. For example, if I saved a file called mine, it would be saved on the hard drive as mine.doc. For more info, see
http://filext.com/detaillist.php?extdetail=DOC. And, for more on File Extension in general, go to
http://filext.com/Again: Do you know how to view files with Windows Explorer? Can you search on *.doc? Do you know how to do searches in Windows? Hint: right click on the Start button. You might first just look in My Documents. See anything there?