zentao/extension/ipd/effort/ext/lang/en/zentaomax.php

<?php
$lang->effort->objectTypeList['risk']          = 'Risk';
$lang->effort->objectTypeList['issue']         = 'Issue';
$lang->effort->objectTypeList['review']        = 'Review';
$lang->effort->objectTypeList['projectchange'] = 'Project Change';
$lang->effort->objectTypeList['cm']            = 'Baseline';