This is the 14995th most frequent Russian word.
подругу
"Подругу" means "female friend" in English.
The word 'подругу' is in the accusative case, acting as the direct object of the verb 'встретил', indicating the female friend being met.
Я встретил свою старую подругу вчера в парке.
I met my old female friend yesterday in the park.
The word 'подруге' is in the prepositional case after the preposition 'о', referring to the female friend as the topic of conversation.
Мы поговорили о подруге, которая недавно уехала.
We talked about a female friend who recently left.
The word 'подруге' is in the dative case, used to indicate the recipient of the action—the female friend receiving the gift.