diff --git a/includes/Post_Type/Post_Type.php b/includes/Post_Type/Post_Type.php
new file mode 100644
index 0000000..a111ba4
--- /dev/null
+++ b/includes/Post_Type/Post_Type.php
@@ -0,0 +1,31 @@
+<?php
+
+declare( strict_types=1 );
+
+namespace WordPress_Related\Post_Type;
+
+use WordPress_Related\Infrastructure\Registerable;
+
+/**
+ * Post_Type class for WordPress Related Plugin.
+ *
+ * This class is responsible for registering and managing a custom post type
+ * for the WordPress Related plugin.
+ *
+ * @package   WORDPRESS_RELATED
+ * @copyright Copyright (C) 2023-2023, WordPress Related - freibergergarcia@gmail.com
+ * @link      https://www.github.com/freibergergarcia/wordpress-related
+ * @license   http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License v2.0
+ * @since     1.0.0
+ * @see       https://developer.wordpress.org/plugins/post-types/
+ */
+class Post_Type implements Registerable {
+
+	/**
+	 * Register the post type.
+	 *
+	 * @return void
+	 */
+	public function register(): void {
+	}
+}
diff --git a/includes/Taxonomy/Taxonomy.php b/includes/Taxonomy/Taxonomy.php
new file mode 100644
index 0000000..b136d6d
--- /dev/null
+++ b/includes/Taxonomy/Taxonomy.php
@@ -0,0 +1,31 @@
+<?php
+
+declare( strict_types=1 );
+
+namespace WordPress_Related\Taxonomy;
+
+use WordPress_Related\Infrastructure\Registerable;
+
+/**
+ * Taxonomy class for WordPress Related Plugin.
+ *
+ * This class is responsible for registering and managing a custom taxonomy
+ * for the WordPress Related plugin.
+ *
+ * @package   WORDPRESS_RELATED
+ * @copyright Copyright (C) 2023-2023, WordPress Related - freibergergarcia@gmail.com
+ * @link      https://www.github.com/freibergergarcia/wordpress-related
+ * @license   http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License v2.0
+ * @since     1.0.0
+ * @see       https://developer.wordpress.org/plugins/taxonomies/
+ */
+class Taxonomy implements Registerable {
+
+	/**
+	 * Register the taxonomy.
+	 *
+	 * @return void
+	 */
+	public function register(): void {
+	}
+}