This is the 2535th most frequent French word.
claudia
"Claudia" is not a French word; it is a proper noun, typically a given name.
In this sentence, 'Claudia' is used as a proper noun, the name of a person.
Claudia est une personne très gentille.
Claudia is a very kind person.
Here, 'Claudia' refers specifically to an individual observed by the speaker.
Hier, j'ai vu Claudia au marché.
Yesterday, I saw Claudia at the market.
In this context, 'Claudia' is the recipient of the action, indicating interaction with an individual of that name.