<p>To answer you general question, you can create a synonym when you have 10K rep or are a mod (see the <a href="https://stats.stackexchange.com/privileges">privileges</a> page).</p>

<p>Regarding your particular question about multicollinearity, I agree with Srikant's suggestion:</p>

<ul>
<li>Misspellings should be fixed (as in this case).</li>
<li>Context differences should be handled with a synonym, e.g. modelling and modeling.</li>
</ul>
