separated-coma-term

<?php 

// Displays comma separated taxonomy terms.
function entry_terms() {
	$terms = get_the_terms( get_the_ID() , 'tags-name' );
	if ( ! empty( $terms ) ) {
		echo '<p class="entry-meta"><span class="entry-terms">';
			foreach ( $terms as $term ) {
				$entry_terms .= $term->name . ', ';
			}
			$entry_terms = rtrim( $entry_terms, ', ' );
		echo $entry_terms . '</span></p>';
	}
}

entry_terms()