This is the 120th most frequent French word.
paris
The French word "Paris" refers to the capital city of France.
In this sentence, 'Paris' is used as a proper noun to refer to the capital of France.
Je rêve de visiter Paris un jour.
I dream of visiting Paris one day.
Here, 'Paris' is used possessively to describe something belonging to or associated with the city, specifically its sky.
Le ciel de Paris au coucher du soleil est magnifique.
The sky of Paris at sunset is magnificent.
In this context, 'Paris' is mentioned twice, once as an adjectival derivation in 'parisien' meaning 'Parisian', and again as the city itself.