Product Custom Taxonomy

    register_taxonomy( 'product_range_cat',
        array('product'),
        array('hierarchical' => true,
            'labels' => array(
                'name' => __( 'Product Categories', 'bonestheme' ),
                'singular_name' => __( 'Product Category', 'bonestheme' ),
                'search_items' =>  __( 'Search Product Categories', 'bonestheme' ),
                'all_items' => __( 'All Product Categories', 'bonestheme' ),
                'parent_item' => __( 'Parent Product Category', 'bonestheme' ),
                'parent_item_colon' => __( 'Parent Product Category:', 'bonestheme' ),
                'edit_item' => __( 'Edit Product Category', 'bonestheme' ),
                'update_item' => __( 'Update Product Category', 'bonestheme' ),
                'add_new_item' => __( 'Add New Product Category', 'bonestheme' ),
                'new_item_name' => __( 'New Product Category Name', 'bonestheme' )
            ),
            'show_ui' => true,
            'query_var' => true,
            'rewrite' => array( 'slug' => 'product-category' ),
        )
    );