function wporg_custom_post_type() {
    register_post_type('book',
        array(
            'labels'      => array(
                'name'          => __('Books', 'textdomain'),
                'singular_name' => __('Book', 'textdomain'),
            ),
                'public'      => true,
                'has_archive' => true,
        )
    );
}
add_action('init', 'wporg_custom_post_type');

/**
 * Create two taxonomies, genres and writers for the post type "book".
 *
 * @see register_post_type() for registering custom post types.
 */
function wpdocs_create_book_taxonomies() {
    // Add new taxonomy, make it hierarchical (like categories)
    $labels = array(
        'name'              => _x( 'Genres', 'taxonomy general name', 'textdomain' ),
        'singular_name'     => _x( 'Genre', 'taxonomy singular name', 'textdomain' ),
        'search_items'      => __( 'Search Genres', 'textdomain' ),
        'all_items'         => __( 'All Genres', 'textdomain' ),
        'parent_item'       => __( 'Parent Genre', 'textdomain' ),
        'parent_item_colon' => __( 'Parent Genre:', 'textdomain' ),
        'edit_item'         => __( 'Edit Genre', 'textdomain' ),
        'update_item'       => __( 'Update Genre', 'textdomain' ),
        'add_new_item'      => __( 'Add New Genre', 'textdomain' ),
        'new_item_name'     => __( 'New Genre Name', 'textdomain' ),
        'menu_name'         => __( 'Genre', 'textdomain' ),
    );
 
    $args = array(
        'hierarchical'      => true,
        'labels'            => $labels,
        'show_ui'           => true,
        'show_admin_column' => true,
        'query_var'         => true,
        'rewrite'           => array( 'slug' => 'genre' ),
    );
 
    register_taxonomy( 'genre', array( 'book' ), $args );
 
    unset( $args );
    unset( $labels );
 
    // Add new taxonomy, NOT hierarchical (like tags)
    $labels = array(
        'name'                       => _x( 'Writers', 'taxonomy general name', 'textdomain' ),
        'singular_name'              => _x( 'Writer', 'taxonomy singular name', 'textdomain' ),
        'search_items'               => __( 'Search Writers', 'textdomain' ),
        'popular_items'              => __( 'Popular Writers', 'textdomain' ),
        'all_items'                  => __( 'All Writers', 'textdomain' ),
        'parent_item'                => null,
        'parent_item_colon'          => null,
        'edit_item'                  => __( 'Edit Writer', 'textdomain' ),
        'update_item'                => __( 'Update Writer', 'textdomain' ),
        'add_new_item'               => __( 'Add New Writer', 'textdomain' ),
        'new_item_name'              => __( 'New Writer Name', 'textdomain' ),
        'separate_items_with_commas' => __( 'Separate writers with commas', 'textdomain' ),
        'add_or_remove_items'        => __( 'Add or remove writers', 'textdomain' ),
        'choose_from_most_used'      => __( 'Choose from the most used writers', 'textdomain' ),
        'not_found'                  => __( 'No writers found.', 'textdomain' ),
        'menu_name'                  => __( 'Writers', 'textdomain' ),
    );
 
    $args = array(
        'hierarchical'          => false,
        'labels'                => $labels,
        'show_ui'               => true,
        'show_admin_column'     => true,
        'update_count_callback' => '_update_post_term_count',
        'query_var'             => true,
        'rewrite'               => array( 'slug' => 'writer' ),
    );
 
    register_taxonomy( 'writer', 'book', $args );
}
// hook into the init action and call create_book_taxonomies when it fires
add_action( 'init', 'wpdocs_create_book_taxonomies', 0 );

<?php
/**
 * The template for displaying archive pages
 *
 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/
 *
 * @package WordPress
 * @subpackage Twenty_Seventeen
 * @since Twenty Seventeen 1.0
 * @version 1.0
 */

get_header(); ?>

<div class="wrap">

	<?php if ( have_posts() ) : ?>
		<header class="page-header">
			<?php
				the_archive_title( '<h1 class="page-title">', '</h1>' );
				the_archive_description( '<div class="taxonomy-description">', '</div>' );
			?>
		</header><!-- .page-header -->
	<?php endif; ?>

	<div id="primary" class="content-area">
		<main id="main" class="site-main" role="main">

		<?php
		if ( have_posts() ) :
			?>
			<?php
			// Start the Loop.
			while ( have_posts() ) :
				the_post();

				/*
				 * Include the Post-Format-specific template for the content.
				 * If you want to override this in a child theme, then include a file
				 * called content-___.php (where ___ is the Post Format name) and that
				 * will be used instead.
				 */
				get_template_part( 'template-parts/post/content', get_post_format() );

			endwhile;

			the_posts_pagination(
				array(
					'prev_text'          => __( 'Previous page', 'twentyseventeen' ),
					'next_text'          => __( 'Next page', 'twentyseventeen' ),
					'before_page_number' => '<span class="meta-nav screen-reader-text">' . __( 'Page', 'twentyseventeen' ) . ' </span>',
				)
			);

		else :

			get_template_part( 'template-parts/post/content', 'none' );

		endif;
		?>

		</main><!-- #main -->
	</div><!-- #primary -->
	<?php get_sidebar(); ?>
</div><!-- .wrap -->

<?php
get_footer();