The kanji 沼 (沼) fundamentally represents a "marsh," "swamp," or "bog." It denotes a body of standing water, often shallow, stagnant, and characterized by the presence of vegetation. The core concept is an area where water collects, and the land is soft or muddy.

・On-yomi (音読み): ショウ (shou) ・Kun-yomi (訓読み): ぬま (numa)

⚫︎沼地 Translation: marshland; swamp ⚫︎沼の水 Translation: the water of the swamp ⚫︎湖沼 Translation: lakes and marshes

The kanji 沼 (沼) is a phono-semantic compound (形声文字, keisei moji). The left side is the water radical, 氵 (also written as 水, mizu) which indicates its relationship to water. The right side is 召, which provides the sound and originally depicted a person calling out or summoning. The combination suggests water collecting or gathering, creating the meaning of a marsh or swamp. Over time, the character has maintained its association with bodies of water, typically those that are stagnant.