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

Yes

The differences between the use of "conselheiro" in Brazilian and Continental Portuguese are primarily phonetic rather than semantic or grammatical.

In Brazilian Portuguese, the vowels are typically more "open" and clearly articulated. The unstressed "e" in conselheiro is pronounced distinctly. Depending on the region, the "r" may be more soft or aspirated.

In Continental Portuguese, the pronunciation is more "closed." Unstressed vowels are often reduced or nearly suppressed, meaning the "e" in conselheiro might sound almost like a faint "i" or be nearly silent. Additionally, the "r" sound is often more guttural (uvular) compared to many Brazilian dialects.

Brazilian Portuguese Examples

1. O conselheiro tutelar visitou a escola hoje. (The child rights counselor visited the school today.)
2. Ele trabalha como conselheiro de administração. (He works as a board member.)
3. Eu sempre peço a opinião do meu conselheiro. (I always ask my advisor's opinion.)
4. O conselheiro deu uma ideia muito boa para o projeto. (The advisor gave a very good idea for the project.)
5. Precisamos contratar um novo conselheiro para a empresa. (We need to hire a new advisor for the company.)

Continental Portuguese Examples

1. O conselheiro está a preparar o relatório. (The advisor is preparing the report.)
2. O conselheiro de administração reuniu-se ontem. (The board member met yesterday.)
3. O conselheiro deu-nos um excelente conselho. (The advisor gave us excellent advice.)
4. Ele atua como conselheiro da nossa instituição. (He acts as an advisor for our institution.)
5. O conselheiro explicou a decisão ao grupo. (The advisor explained the decision to the group.)