WordNet: depression, natural depression

a sunken or depressed geological formation

• hypernym formation, geological formation

• hyponym basin

• hyponym bed, bottom

• hyponym crater

• hyponym hole, hollow

• hyponym lowland

• hyponym sink, sinkhole, swallow hole

• hyponym deep, oceanic abyss, trench

• hyponym trough

• hyponym vale, valley

depression

• (suomi) syvänkö (synonyymi)

natural depression

• (englanti) natural elevation (antonym)
• (suomi) syvänkö (synonyymi)