This is the 12373rd most frequent Russian word.
капусты
"Kapusty" means "cabbages" in English.
Here, 'капусты' is used as the singular noun's genitive case form, indicating partitive or quantity of cabbage being discussed.
На рынке продаётся много свежей капусты.
There is a lot of fresh cabbage being sold at the market.
In this sentence, 'капусты' is used in the genitive case for the singular noun, showing the quantity referenced after 'two kilograms'.
Я купил два килограмма капусты для супа.
I bought two kilograms of cabbage for soup.
Here, 'капусты' is the genitive case of the singular noun, used to express the entity being cultivated in the context of agriculture.