term
$tax_query = array( 'relation' => 'OR', array( 'terms' => array( '25', '26' ), 'field' => 'term_id', 'operator' => 'IN', ), );
$tax_query = array( 'relation' => 'OR', array( 'terms' => array( '25', '26' ), 'field' => 'term_id', 'operator' => 'IN', ), );