Independence Hall vs City of Brotherly Love

Independence Hall and City of Brotherly Love both are nouns.

Word	Noun	Adjective	Verb	Adverb
Independence Hall	Yes	No	No	No
City of Brotherly Love	Yes	No	No	No

Independence Hall (noun)	City of Brotherly Love (noun)
the building in Philadelphia where the Declaration of Independence was signed	the largest city in Pennsylvania; located in the southeastern part of the state on the Delaware river; site of Independence Hall where the Declaration of Independence and the Constitution were signed; site of the University of Pennsylvania