This is the 12736th most frequent Russian word.
краску
"Краску" is the accusative singular form of "краска," meaning "paint" or "dye" in English.
In this sentence, 'краску' is used as a direct object, referring to paint as a tangible substance purchased for a task.
Я купил краску для покраски забора.
I bought paint for painting the fence.
Here, 'краска' refers to a specific amount or type of paint necessary for a creative or renovation process.
Чтобы обновить рисунок, мне нужна новая краска.
To refresh the painting, I need new paint.
In this example, 'краской' is in the instrumental case, describing the substance involved in the action of painting.