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

No

The difference is morphological and lexical. In Brazil, the verb used is maquiar, which leads to the conjugation maquiamos. In Portugal, the standard verb is maquilhar, which leads to the conjugation maquilamos. Furthermore, the noun for "makeup" differs: Brazilians say maquiagem, while Portuguese people say maquilhagem. In European Portuguese, a distinction is also made in writing between the present tense (maquilhamos) and the past tense (maquilhámos) using an accent, a distinction that does not exist in the Brazilian spelling of maquiamos.

Brazilian Portuguese Examples

1. Nós nos maquiamos para a festa. (We put on makeup for the party.)
2. Maquiamos o rosto para esconder as manchas. (We apply makeup to the face to hide the spots.)
3. Maquiamos a noiva com muito cuidado. (We applied makeup to the bride with great care.)
4. Nós maquiamos as crianças para o teatro. (We put makeup on the children for the theater.)
5. Maquiamos as modelos antes do desfile. (We apply makeup to the models before the fashion show.)

Portuguese (Portugal) Examples

1. Maquilhamo-nos para a festa. (We put on makeup for the party.)
2. Maquilhamos o rosto para esconder as manchas. (We apply makeup to the face to hide the spots.)
3. Maquilhámos a noiva com muito cuidado. (We applied makeup to the bride with great care.)
4. Nós maquilhamos as crianças para o teatro. (We put makeup on the children for the theater.)
5. Maquilhamos as modelos antes do desfile. (We apply makeup to the models before the fashion show.)