<!-- Category -->
<?php if(is_category('5' )) { ?>

<?php } elseif(is_category('10')) { ?>

<?php } else { ?>

<?php } ?>
<!-- Category -->

<!-- Custom Taxonomy -->
<?php if ( is_tax('taxonomy-name','taxonomy-one' ) ) {?>

<?php } elseif ( is_tax('taxonomy-name','taxonomy-two' ) ) {?>

<?php } ?>
<!-- Custom Taxonomy -->