city vs Newcastle upon Tyne

city and Newcastle upon Tyne both are nouns.

Word	Noun	Adjective	Verb	Adverb
city	Yes	No	No	No
Newcastle upon Tyne	Yes	No	No	No

city (noun)	Newcastle upon Tyne (noun)
people living in a large densely populated municipality	a port city in northeastern England on the River Tyne; a center for coal exports (giving rise to the expression `carry coals to Newcastle' meaning to do something unnecessary)
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter