add-custom-taxonomy-wp.php

// Lets us create Taxonomy for Custom Post Type
add_action( 'init', 'jobs_custom_taxonomy', 0 );
 
//create a custom taxonomy name it "type" for your posts
function jobs_custom_taxonomy() {
  $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' => __( 'Types' ),
  ); 	
 
  register_taxonomy('types',array('jobs'), array(
    'hierarchical' => true,
    'labels' => $labels,
    'show_ui' => true,
    'show_admin_column' => true,
    'query_var' => true,
    'rewrite' => array( 'slug' => 'job' ),
  ));
}