This is the 6828th most frequent Russian word.
kremlin
A "kremlin" is a fortified complex or citadel found in Russian cities, often serving as the seat of government or containing historic buildings.
Here, 'Kremlin' refers to the famous historic fortified complex in Moscow.
Кремль расположен в сердце Москвы.
The Kremlin is situated in the heart of Moscow.
In this context, 'kremlin' denotes a medieval fortress, common in Russian cities apart from Moscow.
В России много городов имеют свой собственный кремль.
In Russia, many cities have their own kremlin.
Here, 'Kremlin' is specifically associated with the architectural feature of its walls.