An application is the name of a GUI software program. A command is the name of an executable (text) program or a software command.

The <application> and </application> tags allow you to refer to an application or program. For example, the following XML:

To view the Web in Linux, you can use
<application>Mozilla</application> or
<application>lynx</application> if you only want a text-based
browser.

produces the following output:

To view the Web in Linux, you can use Mozilla or lynx if you only want a text-based browser.