This is the 15104th most frequent Russian word.
покупками
"Покупками" means "purchases" or "shopping" in English.
Here, 'покупками' refers to the activity of purchasing items, specifically groceries.
Я занимаюсь покупками продуктов для праздничного ужина.
I am shopping for groceries for the festive dinner.
In this sentence, 'покупками' implies the activity of shopping in general.
Мама раздала нам деньги, чтобы мы могли заняться покупками.
Mom gave us money so that we could go shopping.
Here, 'покупками' describes the repeated action or time spent acquiring items for the home.