This is the 5074th most frequent Catalan word.
alvise
The word "alvise" does not exist in Catalan. It may be a typo or from another language.
Here, 'Alvise' is used as a proper noun and is the subject of the sentence referring to a person named Alvise.
Potser l'Alvise vendrà amb nosaltres al cinema.
Maybe Alvise will come with us to the cinema.
The word 'Alvise' is again a proper noun used as an indirect object in the sentence, indicating the person who will be discussed.
I després parlarem amb l'Alvise sobre el projecte.
And afterwards, we will talk to Alvise about the project.
In this instance, 'Alvise' is a proper noun used as the subject in the sentence emphasizing this person's polite greetings.