Adding custom post & taxonomy

Add Custom Taxonomy:

add_action( 'init', 'cptui_register_my_taxes_movies' );
function cptui_register_my_taxes_case_study() {
    $labels = array(
		"name" => __( 'Category', '' ),
		"singular_name" => __( 'Movies', '' ),
    );

	$args = array(
		"label" => __( 'Category', '' ),
		"labels" => $labels,
		"public" => true,
		"hierarchical" => false,
		"label" => "Category",
		"show_ui" => true,
    "show_in_menu" => true,
    "show_in_nav_menus" => true,
		"query_var" => true,
		"rewrite" => array( 'slug' => 'movies', 'with_front' => true, ),
		"show_admin_column" => false,
		"show_in_rest" => false,
		"rest_base" => "",
    "show_in_quick_edit" => false,
	);
	register_taxonomy( "movies", array( "movies" ), $args );

}

Add Custom Post type:

function create_posttype() {

    register_post_type( 'movies',
	// CPT Options
		array(
			'labels' => array(
				'name' => __( 'Movies' ),
				'singular_name' => __( 'Movie' )
			),
			'public' => true,
			'has_archive' => true,
			'rewrite' => array('slug' => 'movies'),
		)
	);
}
// Hooking up our function to theme setup
add_action( 'init', 'create_posttype' );