沼【ぬま】
marsh, swamp, wetland, bog, pond, obsession, addiction, being hooked on, getting sucked into, ugly man
泥沼【どろぬま】
bog, marsh, swamp, quagmire, morass, quandary, dire situation from which one cannot extricate oneself, imbroglio
湖沼【こしょう】
lake, marsh, wetland, inland waters
沼田【ぬまた】
marshy rice field or paddy
沼地【ぬまち】
marshland, wetland, swampland
沼沢【しょうたく】
marsh, swamp, bog