blog-news-featured

// WP_Query arguments
$args = array(
	'posts_per_page'         => '3',
	'tax_query'              => array(
		'relation' => 'OR',
		array(
			'taxonomy'         => 'category',
			'terms'            => 'blog',
			'field'            => 'slug',
		),
		array(
			'taxonomy'         => 'category',
			'terms'            => 'news',
			'field'            => 'slug',
		),
	),
);

// The Query
$loop = new WP_Query( $args );