This is the 8384th most frequent French word.
zwickau
"Zwickau" is not a French word; it is the name of a city in Germany.
In this sentence, 'Zwickau' refers to the name of a German city, being used as a proper noun.
Zwickau est une ville en Allemagne que je voudrais visiter.
Zwickau is a city in Germany that I would like to visit.
Here, 'Zwickau' again acts as a proper noun referring to the city, emphasizing its cultural aspects.
De nombreux touristes disent que Zwickau a une architecture impressionnante.
Many tourists say that Zwickau has an impressive architecture.
In this example, 'Zwickau' is used to describe the locale where the person's friend resides, again as a proper noun.