Gallery 1

// WP_Query arguments
$args = array(
	'post_type'              => array( 'gallery' ),
	'posts_per_page'         => '-1',
	'order'                  => 'DESC',
	'orderby'                => 'date',
	'tax_query'              => array(
		'relation' => 'AND',
		array(
			'taxonomy'         => 'gallery_taxonomy',
			'terms'            => 'commercial',
		),
	),
);

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