This is the 5398th most frequent Russian word.
пакетов
"Пакетов" is the plural genitive form of "пакет," meaning "bags" or "packages."
In this sentence, 'пакетов' is in the genitive plural form to indicate the quantity—'two bags'.
Я купил два пластиковых пакета для покупок.
I bought two plastic bags for shopping.
Here, 'пакетов' is in the genitive plural form to express an unspecified quantity following 'more'.
Мне нужно больше пакетов для упаковки подарков.
I need more bags for packing gifts.
The word 'пакетов' in this sentence is in the genitive plural form, used here as part of a possessive construction indicating 'of plastic bags'.