This is the 3533rd most frequent Polish word.
aleix
It seems "aleix" is not a Polish word. It might be misspelled or refer to another language. Could you clarify?
Here, 'Aleix' is used as a proper noun, referring to a person's name.
Aleix to osoba, która uwielbia grać na gitarze.
Aleix is a person who loves playing the guitar.
'Aleix' is again used as a proper noun, specifically indicating an individual named Aleix in the context of a meeting.
Na spotkaniu poznałem Aleixa, który opowiadał o swoich podróżach.
At the meeting, I met Aleix, who was talking about his travels.
In this sentence, 'Aleix' is used as a direct form of address to call someone by their name.