Answer:
Formal And Informal Speech
Grammar And Spelling
The Accents
Vocabulary
Portuguese is a language that has different pronouns depending on the formality of the situation. In Brazil, you can address most people with você in informal contexts, but it works in some formal situations as well, bringing it closer to the classless universality of you in the English language. In Portugal, however, tu is used exclusively for friends and family, and as well as in other casual situations.