City of Light vs capital of France

City of Light and capital of France both are nouns.

Word	Noun	Adjective	Verb	Adverb
City of Light	Yes	No	No	No
capital of France	Yes	No	No	No

As nouns, City of Light and capital of France are synonyms defined as:

City of Light and capital of France: the capital and largest city of France; and international center of culture and commerce

Other synonyms of City of Light include French capital, Paris.

City of Light (noun)	capital of France (noun)
the capital and largest city of France; and international center of culture and commerce	the capital and largest city of France; and international center of culture and commerce