urban center vs Lucknow

urban center and Lucknow both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Lucknow	Yes	No	No	No

urban center (noun)	Lucknow (noun)
a large and densely populated urban area; may include several independent administrative districts	the British residents of Lucknow were besieged by Indian insurgents during the Indian Mutiny (1857)
	a city in northern India in Uttar Pradesh; during the Indian Mutiny its British residents were besieged by Indian insurgents