This is the 462nd most frequent Portuguese word.
amigo
Friend.
Here, 'amigo' is used as a noun to refer to a close friend or companion.
Meu amigo veio me visitar hoje.
My friend came to visit me today.
In this case, 'amigo' is used as an adjective, describing someone as outgoing and friendly.
Ele é muito amigo de todos na vizinhança.
He is very friendly to everyone in the neighborhood.
Here, 'amigo' functions as part of the expression 'amigo ato,' which refers to a kind or friendly deed.