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

Yes

The word "camarão" shares the same meaning, spelling, and grammatical function in both Brazilian and Continental Portuguese. The only significant difference lies in pronunciation:

• Brazilian Portuguese: The nasal diphthong "-ão" is typically pronounced with a more open and resonant "a" and a very distinct, heavy nasalization. The vowels tend to be more open and the rhythm is more melodic.
• Continental Portuguese: The pronunciation is much more "closed." The "a" in the diphthong is often neutralized or shortened, and the overall cadence of the word is more staccato and rapid, with less emphasis on the openness of the nasal vowel.

Brazilian Portuguese Examples

1. Eu adoro comer camarão na brasa. (I love eating grilled shrimp.)
2. O prato de camarão estava uma delícia. (The shrimp dish was delicious.)
3. Comprei um quilo de camarão fresco no mercado. (I bought a kilo of fresh shrimp at the market.)
4. Você prefere camarão ou lula? (Do you prefer shrimp or squid?)
5. Fiz uma paella de camarão para o jantar. (I made a shrimp paella for dinner.)

Continental Portuguese Examples

1. Eu adoro comer camarão no churrasco. (I love eating shrimp at the barbecue.)
2. O prato de camarão estava ótimo. (The shrimp dish was great.)
3. Comprei um quilo de camarão fresco no mercado. (I bought a kilo of fresh shrimp at the market.)
4. Preferes camarão ou lula? (Do you prefer shrimp or squid?)
5. Fiz uma paella de camarão para o jantar. (I made a shrimp paella for dinner.)