French capital vs Paris

French capital and Paris both are nouns.

Word	Noun	Adjective	Verb	Adverb
French capital	Yes	No	No	No
Paris	Yes	No	No	No

As nouns, French capital and Paris are synonyms defined as:

French capital and Paris: the capital and largest city of France; and international center of culture and commerce

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

French capital (noun)	Paris (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
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