Is the word prefere the same in Brazilian and European Portuguese?

Yes

The word "prefere" is identical in Brazilian and Continental Portuguese regarding its spelling, grammar, and meaning (it is the third-person singular present indicative of the verb preferir). The only difference lies in pronunciation. In Brazil, the vowels tend to be more open and the rhythm is more melodic. In Portugal, unstressed vowels are often reduced or "swallowed," making the word sound shorter and more closed.

Brazilian Portuguese Examples

1. Ele prefere comer pizza no fim de semana. (He prefers to eat pizza on the weekend.)
2. Você prefere usar o celular ou o computador? (Do you prefer to use the cell phone or the computer?)
3. Ela prefere ir ao shopping hoje. (She prefers to go to the mall today.)
4. O seu cachorro prefere brincar no jardim. (Your dog prefers to play in the garden.)
5. Ele prefere dirigir em vez de pegar um ônibus. (He prefers to drive instead of taking a bus.)

Portuguese (Continental) Examples

1. Ele prefere usar o telemóvel. (He prefers to use the mobile phone.)
2. Ela prefere apanhar o autocarro. (She prefers to catch the bus.)
3. O seu cão prefere brincar no jardim. (Your dog prefers to play in the garden.)
4. Ele prefere viajar de comboio. (He prefers to travel by train.)
5. Ele prefere tomar o pequeno-almoço agora. (He prefers to have breakfast now.)