city vs Murmansk

city and Murmansk both are nouns.

Word	Noun	Adjective	Verb	Adverb
city	Yes	No	No	No
Murmansk	Yes	No	No	No

city (noun)	Murmansk (noun)
people living in a large densely populated municipality	a port city in northwestern Russia on the Kola Peninsula; the largest city to the north of the Arctic Circle; an important supply line to Russia in World War I and World War II
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter