This is the 3399th most frequent Japanese word.
水槽
"水槽" means "water tank" or "aquarium."
Here, '水槽' refers to a tank or aquarium for fishes and other aquatic creatures.
私は新しい水槽を購入しました。
I purchased a new fish tank.
In this context, '水槽' emphasizes its function as a container holding water that requires maintenance.
水槽の水が汚れているので掃除が必要です。
The water in the tank is dirty, so cleaning is necessary.
Here, '水槽' is used to describe a large container utilized for scientific purposes.