This is the 3902nd most frequent Russian word.
вода
Water.
The word "вода" is used as an object in this sentence, denoting what the subject drinks.
Я пью воду каждый день.
I drink water every day.
Here, "вода" is used as the subject noun, referring to the water in a specific location, the river.
Вода в реке холодная сегодня.
The water in the river is cold today.
In this sentence, "вода" is used in the genitive case "воды" to express an indefinite quantity, as part of the imperative instruction.