Proper. It is a name of a city in Russia.
Yes, the word 'Moscow' is a noun, a proper noun, the name of a specific place.
No. Moscow is the fifth most populous city in the world, by city proper. It is, however, the largest city in Europe.
proper
As a name of a road , Park Avenue', it is a proper noun, and both words star with a capital letter. However, when used separately, as 'the park, or 'the avenue', they are common nouns and so not need a capital letter.
common
common and proper
As part of the city political limits or proper, yes. But the greater metropolitan area of Mexico City is much bigger:Population (city proper, 2015):Moscow: 12.2 millionMexico City: 8.9 millionPopulation (greater metropolitan area, 2015):Moscow: 16.8 millionMexico City: 21.2 million
The Spanish term for "Moscow Mule" is "Moscow Mule," as it is typically used as a proper noun for the cocktail. However, you might also hear it referred to as "cóctel Moscow Mule" in some contexts. The drink retains its English name in many Spanish-speaking countries.
It is a proper noun, because it is the name of a specific thing.
All are their nation's Capital.
common
it's a common noun. a proper noun would be Spider-Man.