The Chinese word "沼泽" (swamp/marsh) is formed by combining two characters, "沼" and "泽", each of which independently conveys meanings related to water-saturated land. "沼" typically refers to a pond or marsh, while "泽" denotes a wetland or marshy area. Together, they create a compound word where both elements reinforce and specify the concept, resulting in a term that vividly describes a waterlogged, muddy terrain. This formation follows a common Chinese linguistic practice of merging semantically similar characters to express a more precise or intensified idea.