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

No

While the spelling and grammar of "pretas" are identical in both Brazilian and Continental Portuguese, there is a difference in typical usage regarding racial identity. In Brazil, "pretas" (the feminine plural of preto) is a standard, widely accepted, and frequent way to refer to Black women. In Portugal, "pretas" is used almost exclusively to describe the color black, whereas "negras" is the standard and natural term used to refer to the racial group. Additionally, there is a difference in pronunciation: the final "s" is typically a soft [s] in much of Brazil, whereas in Portugal, it is almost always pronounced as a "sh" [ʃ] sound.

Brazilian Portuguese Examples

1. As roupas pretas estão limpas. (The black clothes are clean.)
2. As mulheres pretas venceram o concurso. (The Black women won the contest.)
3. As canetas pretas não funcionam. (The black pens do not work.)
4. As sombras pretas são intensas. (The black shadows are intense.)
5. As bolsas pretas são elegantes. (The black bags are elegant.)

Continental Portuguese Examples

1. As roupas pretas estão limpas. (The black clothes are clean.)
2. As mulheres negras venceram o concurso. (The Black women won the contest.)
3. As canetas pretas não funcionam. (The black pens do not work.)
4. As sombras pretas são intensas. (The black shadows are intense.)
5. As malas pretas são elegantes. (The black bags are elegant.)