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

Yes

The word "compras" is identical in meaning, spelling, and grammar in both Brazilian and European Portuguese. The only difference is pronunciation.

In Brazilian Portuguese, the vowels are generally more open and clearly articulated, and the final "s" is typically pronounced as a soft "s" (like the "s" in "sun"). In Continental (European) Portuguese, the vowels are much more reduced or "closed," and the final "s" is pronounced as a "sh" sound (like "shoe").

Brazilian Portuguese Examples

1. Eu preciso fazer as compras do mês. (I need to do the monthly grocery shopping.)
2. Minhas compras estão no carro. (My shopping/groceries are in the car.)
3. Adoro fazer compras no shopping. (I love shopping at the mall.)
4. As compras ficaram muito caras hoje. (The shopping became very expensive today.)
5. Você pode me ajudar com as compras? (Can you help me with the shopping?)

European Portuguese Examples

1. Tenho de fazer as compras para o jantar. (I have to do the shopping for dinner.)
2. Onde é que pus as compras? (Where did I put the shopping?)
3. Fiz umas compras fantásticas no centro comercial. (I did some fantastic shopping at the mall.)
4. As compras do supermercado são pesadas. (The supermarket shopping is heavy.)
5. Já chegámos com as compras. (We have already arrived with the shopping.)