es sencillo, mira...
Código PHP:
$foo = array(
'candy' => 2,
'bar' => 3,
'does' => 1
);
echo '<table><tr><th>palabra</th><th>frecuencia</th></tr>';
foreach ($foo as $k => $v)
{
echo '<tr><td>' . $k . '</td>';
echo '<td>' . $v . '</td></tr>';
}
echo '</table>';