This is the 742nd most frequent French word.
charleroi
Charleroi is not a standard French word; it is the name of a city in Belgium.
In this sentence, 'Charleroi' is used as a proper noun referring to the city in Belgium.
Je vais à Charleroi pour visiter ma famille.
I am going to Charleroi to visit my family.
Here, 'Charleroi' functions as a proper noun in an attributive role, describing the museum associated with the city.
Le musée de Charleroi est très intéressant et immersif.
The Charleroi museum is very interesting and immersive.
In this instance, 'Charleroi' is used directly as a proper noun, the subject of the sentence, highlighting its recognition for a specific characteristic.