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

Yes

The word "românticas" is identical in spelling, meaning, and grammatical function in both Brazilian and European Portuguese. The only difference is pronunciation:

• Brazilian Portuguese: The vowels are generally more open, and the "s" at the end of the word is typically pronounced as a dental [s] (though in certain regions like Rio de Janeiro, it may be pronounced as [ʃ], like the "sh" in "shoe").
• European Portuguese: The vowels are more closed or reduced, and the "s" at the end of the word is almost always pronounced as a postalveolar fricative [ʃ] (the "sh" sound).

Brazilian Portuguese Examples

1. Eu amo músicas românticas. (I love romantic songs.)
2. Elas tiveram noites românticas na praia. (They had romantic nights at the beach.)
3. Essas flores são super românticas! (These flowers are super romantic!)
4. Ela gosta de ler histórias românticas. (She likes to read romantic stories.)
5. As surpresas dele foram muito românticas. (His surprises were very romantic.)

European Portuguese Examples

1. Eu adoro canções românticas. (I love romantic songs.)
2. Elas tiveram noites românticas na praia. (They had romantic nights at the beach.)
3. Estas flores são bastante românticas. (These flowers are quite romantic.)
4. Ela gosta de ler histórias românticas. (She likes to read romantic stories.)
5. As surpresas dele foram muito românticas. (His surprises were very romantic.)