Synonyms for Purple Ground Cherry (same or very similar meaning)
WordNet sense 1 (Mexican annual naturalized in eastern North America having yellow to purple edible fruit resembling small tomatoes):
tomatillo, jamberry, miltomate, Physalis philadelphicaWordNet sense 2 (annual of tropical South America having edible purple fruits):
cape gooseberry, Physalis peruvianaFrom the ODE community, based on WordNetadd/edit