光沢【こうたく】
brilliance, polish, lustre, luster, glossy finish (of photographs)
沢山【たくさん】
a lot, lots, plenty, many, a large number, much, a great deal, a good deal, enough, sufficient, enough, too many, too much
贅沢【ぜいたく】
luxury, extravagance, to live in luxury, to indulge oneself, lavish (use of something), abundant, copious, wasteful, excessive (e.g. demands, expectations)
沼沢【しょうたく】
marsh, swamp, bog