This is the 5692nd most frequent Portuguese word.
alisson
"Alisson" is not a Portuguese word; it's a given name.
In this sentence, 'Alisson' is used as a proper noun referring to a person's name.
Alisson é meu amigo de infância.
Alisson is my childhood friend.
'Alisson' here denotes ownership, showing work associated with the person named Alisson.
O trabalho do Alisson foi muito elogiado.
Alisson's work was highly praised.
In this case, 'Alisson' identifies the person being observed.