This is the 9146th most frequent Portuguese word.
brazilian
"Brazillian" is not a Portuguese word. In English, it refers to something related to Brazil.
The word 'brasileiro' is used as an adjective to describe the origin or type of coffee.
Eu comprei um café brasileiro.
I bought Brazilian coffee.
The word 'brasileiro' is used as an adjective to describe a characteristic (style) associated with Brazil.
Ela gosta do estilo de música brasileiro.
She likes the Brazilian style of music.
The word 'brasileiro' is used as a noun to refer to a specific person from Brazil.