Bog, Swamp
noun, suffix
The kanji and the word are exactly the same. That means they share meanings as well. Note that, unlike English, which differentiates between different types of wetlands like marshes, swamps, or bogs, Japanese 沼 refers to any pond-like areas with muddy, murky water.
ぬま
The reading is the one you learned with the kanji, ぬま.
沼のほとりにテントを張った。
I pitched a tent along the edge of the bog.
沼に入ってはいけないよ。沼に落ちると大変だからね。
Don't go into the bog. It's dangerous if you fall into it.
沼の底にはたくさんの生き物がいるんだよ。
Many creatures live at the bottom of the bog.
どっちにしろ沼に飛び込まなきゃいけないと思うしね。
I guess I have to jump into the swamp anyway.