<p>If you have the reputation to reach the correct level of <a href="https://stats.stackexchange.com/help/privileges">privilege</a> (which you do), then you can create tags.</p>

<p>However, with a mature site like this one, you're encouraged to think carefully about creating new tags (almost any tag of lasting value will either already exist or there will be a similar one which will compete with a new tag). If there's any doubt about how a possible new tag fits into the current tags, for example, you can always discuss it on meta.</p>
