This is the 580th most frequent Russian word.
округа
"Округа" means "district" or "region" in English.
Here, 'округа' refers to the areas surrounding Moscow.
Округа Москвы окружают множество красивых лесов.
The surroundings of Moscow are surrounded by many beautiful forests.
In this context, 'округ' signifies an administrative or geographic district.
В нашем округе построили новый парк.
A new park was built in our district.
'Округа' here is used to discuss regions or nearby areas in a broader sense.