diff --git a/www/contribute/manual.php b/www/contribute/manual.php
index bcec4c61..f3d8db78 100644
--- a/www/contribute/manual.php
+++ b/www/contribute/manual.php
@@ -361,7 +361,7 @@ white-space: nowrap;
 				<li>
 					<p>If the z3998 vocabulary doesn't have an appropriate keyword, next consult the <a href="/vocab/1.0">Standard Ebooks vocabulary</a>.</p>
 					<p>Keywords using this vocabulary are preceded by the <code class="html">se</code> namespace.</p>
-					<p>Unlike other vocabularies, the Standard Ebooks vocabulary is organized heirarchally. A complete vocabulary entry begins with the root vocabulary entry, with subsequent children separated by <code class="html">.</code>.</p>
+					<p>Unlike other vocabularies, the Standard Ebooks vocabulary is organized heirarchically. A complete vocabulary entry begins with the root vocabulary entry, with subsequent children separated by <code class="html">.</code>.</p>
 					<figure>
 						<code class="html">The &lt;i epub:type="se:name.vessel.ship"&gt;&lt;abbr class="initialism"&gt;HMS&lt;/abbr&gt; Bounty&lt;/i&gt;.</code>
 					</figure>
diff --git a/www/contribute/metadata.php b/www/contribute/metadata.php
index 381f31f7..b240af3b 100644
--- a/www/contribute/metadata.php
+++ b/www/contribute/metadata.php
@@ -106,7 +106,7 @@ require_once('Core.php');
 		</ul>
 		<p>This example shows how to mark up the subjects for <i><a href="/ebooks/david-lindsay/a-voyage-to-arcturus">A Voyage to Arcturus</a></i>:</p><code class="html full">&lt;dc:subject id="subject-1"&gt;Science fiction&lt;/dc:subject&gt; &lt;dc:subject id="subject-2"&gt;Psychological fiction&lt;/dc:subject&gt; &lt;dc:subject id="subject-3"&gt;Quests (Expeditions) -- Fiction&lt;/dc:subject&gt; &lt;dc:subject id="subject-4"&gt;Life on other planets -- Fiction&lt;/dc:subject&gt; &lt;meta property="meta-auth" refines="#subject-1"&gt;https://www.gutenberg.org/ebooks/1329&lt;/meta&gt; &lt;meta property="meta-auth" refines="#subject-2"&gt;https://www.gutenberg.org/ebooks/1329&lt;/meta&gt; &lt;meta property="meta-auth" refines="#subject-3"&gt;https://www.gutenberg.org/ebooks/1329&lt;/meta&gt; &lt;meta property="meta-auth" refines="#subject-4"&gt;https://www.gutenberg.org/ebooks/1329&lt;/meta&gt;</code>
 		<h2>SE subjects</h2>
-		<p>Along the Library of Congress categories, we include a custom list of SE subjects in the ebook metadata. Unlike Library of Congress categories, SE subjects are purposefully broad. They’re more like subject categories you’d find a medium-sized bookstore, as opposed to the precise, detailed, heirarchal Library of Congress categories.</p>
+		<p>Along the Library of Congress categories, we include a custom list of SE subjects in the ebook metadata. Unlike Library of Congress categories, SE subjects are purposefully broad. They’re more like subject categories you’d find a medium-sized bookstore, as opposed to the precise, detailed, heirarchical Library of Congress categories.</p>
 		<p>It’s your task to select appropriate SE subjects for your ebook. Usually just one or two of these categories will suffice.</p>
 		<p>If you strongly feel like your book deserves a new category, please contact us to discuss it.</p>
 		<p>Below is a list of all of the recognized SE subjects:</p>