Create a Custom Taxonomy for Custom Post Type

// Taxonomy for Custom Post Type
function staff_custom_taxonomy() {
 
  $labels = array(
    'name' => _x( 'Taxonomies', 'taxonomy general name' ),
    'singular_name' => _x( 'Taxonomy', 'taxonomy singular name' ),
    'search_items' =>  __( 'Search Taxonomies' ),
    'all_items' => __( 'All Taxonomies' ),
    'parent_item' => __( 'Parent Taxonomy' ),
    'parent_item_colon' => __( 'Parent Taxonomy:' ),
    'edit_item' => __( 'Edit Taxonomy' ), 
    'update_item' => __( 'Update Taxonomy' ),
    'add_new_item' => __( 'Add New Taxonomy' ),
    'new_item_name' => __( 'New Taxonomy Name' ),
    'menu_name' => __( 'Taxonomies' ),
  ); 	
 
  register_taxonomy('types',array('staff'), array(
    'hierarchical' => true,
    'labels' => $labels,
    'show_ui' => true,
    'show_admin_column' => true,
    'query_var' => true,
    'rewrite' => array( 'slug' => 'taxonomy' ),
  ));
}
add_action( 'init', 'staff_custom_taxonomy', 0 );