mesa [mesas](flat area of land) noun [UK: ˈmeɪ.sə] [US: ˈmeɪ.sə]
plateau [plateaux](level expanse) noun [UK: ˈplæ.təʊ] [US: plæˈto.ʊ]The rugged rover on Neptune's Triton travelled on a plateau of nitrogen ice. = Il robusto rover su Tritone di Nettuno ha viaggiato su un altopiano di ghiaccio di azoto.
tableland [tablelands](flat region of terrain) noun [UK: ˈteɪbl.lænd] [US: ˈteɪbl.lænd]