Change label from Posts to Articles in Wordpress dashboard option

// Replace Posts label as Articles in Admin Panel

function change_post_menu_label() {

   global $menu;

   global $submenu;

   $menu[5][0] = 'Articles';

   $submenu['edit.php'][5][0] = 'Articles';

   $submenu['edit.php'][10][0] = 'Add Articles';

   echo '';

}

function change_post_object_label() {

       global $wp_post_types;

       $labels = &$wp_post_types['post']->labels;

       $labels->name = 'Articles';

       $labels->singular_name = 'Article';

       $labels->add_new = 'Add Article';

       $labels->add_new_item = 'Add Article';

       $labels->edit_item = 'Edit Article';

       $labels->new_item = 'Article';

       $labels->view_item = 'View Article';

       $labels->search_items = 'Search Articles';

       $labels->not_found = 'No Articles found';

       $labels->not_found_in_trash = 'No Articles found in Trash';

}

add_action( 'init', 'change_post_object_label' );

add_action( 'admin_menu', 'change_post_menu_label' );