| Word | Description |
| Cache | Memory that is set aside on your local computer; used to optimize data transfers between your computer and a web server. For example, if you are requesting a file from a web server and your computer sees that you have already downloaded that file, it will pull it from your local computer rather than downloading it again from the web server. Since information updates frequently, it is a good idea to clear out your web browser's cache from time to time. |
| Cookies | Information stored on the local computer, used chiefly by websites to identify users who have previously registered or visited the site. |