Moscow city is called Moscow.
While this might seem like a simple answer, it's important to understand that "Moscow city" is a redundant phrase. "Moscow" itself is a city, and it's the capital of Russia.
Here are some additional points:
- Official Name: The official name of the city is Moscow (in Russian: Москва, Moskva).
- Other Names: There are no other common names for Moscow.
- Historical Names: In the past, Moscow was known by different names, such as Moskva and Moskvy.