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

Yes

The word "vizinho" is identical in both Brazilian and Continental Portuguese in terms of meaning, spelling, and grammar. The only difference lies in pronunciation (phonetics). In Brazil, vowels are generally more "open" and clearly articulated. In Portugal, unstressed vowels are often reduced or almost "swallowed," leading to a more closed, stress-timed rhythm.

Brazilian Portuguese Examples

1. Meu vizinho é muito simpático. (My neighbor is very friendly.)
2. A vizinha do lado comprou um carro novo. (The neighbor next door bought a new/newly bought car.)
3. Vou pedir uma xícara de açúcar para a minha vizinha. (I'm going to ask my neighbor for a cup of sugar.)
4. O vizinho faz muito barulho de noite. (The neighbor makes a lot of noise at night.)
5. Você conhece o nosso novo vizinho? (Do you know our new neighbor?)

Continental Portuguese Examples

1. O meu vizinho é muito simpático. (My neighbor is very friendly.)
2. A vizinha do lado comprou um carro novo. (The neighbor next door bought a new car.)
3. Vou pedir uma chávena de açúcar à minha vizinha. (I'm going to ask my neighbor for a cup of sugar.)
4. O vizinho faz muito barulho durante a noite. (The neighbor makes a lot of noise during the night.)
5. Tu conheces o nosso novo vizinho? (Do you know our new neighbor?)