Register WordPress Taxonomy

register_wordpress_taxonomy.php

<?php $labels = array(
        'name' => _x( 'Types', 'taxonomy general name' ),
        'singular_name' => _x( 'Type', 'taxonomy singular name' ),
        'search_items' =>  __( 'Search Types' ),
        'all_items' => __( 'All Types' ),
        'parent_item' => __( 'Parent Type' ),
        'parent_item_colon' => __( 'Parent Type:' ),
        'edit_item' => __( 'Edit Type' ),
        'update_item' => __( 'Update Type' ),
        'add_new_item' => __( 'Add New Type' ),
        'new_item_name' => __( 'New Type Name' ),
        'menu_name' => __( 'Type' ),
      );

register_taxonomy( 'section', array( 'discover_item' ), array(
   'hierarchical' => true,
   'labels' => $labels,
   'show_ui' => true,
   'query_var' => true,
   'rewrite' => array( 'slug' => 'section' ),
));?>