This is the 6975th most frequent Polish word.
grecję
"Grecję" means "Greece" in English (accusative case).
The word "Grecję" is used in its accusative form as the direct object of the verb "odwiedzić" (to visit).
Planuję odwiedzić Grecję w przyszłym roku.
I plan to visit Greece next year.
Here, "Grecję" is in the accusative case, expressing the object of the verb "zobaczyć" (to see).
Chciałbym zobaczyć Grecję i jej wyspy.
I would like to see Greece and its islands.
In this sentence, "Grecję" is the accusative object of the verb "znam" (I know), referring to the country as the known entity.