zentao/extension/or/action/ext/lang/en/ipd.php

<?php
$lang->action->objectTypes['demand']         = 'Demand';
$lang->action->objectTypes['demandpool']     = 'Demand Pool';
$lang->action->objectTypes['charter']        = 'Charter';
$lang->action->objectTypes['roadmap']        = 'Roadmap';
$lang->action->objectTypes['market']         = 'Market';
$lang->action->objectTypes['marketreport']   = 'Report';
$lang->action->objectTypes['marketresearch'] = 'Research';
$lang->action->objectTypes['researchstage']  = 'Research Stage';