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

Yes

The word "madeira" has the same meaning, spelling, and grammatical function in both Brazilian and Continental Portuguese. It refers to the material (wood/lumber) and the autonomous region of Portugal (Madeira). The only differences are in pronunciation:

• Brazilian Portuguese: The vowels are typically more open and clearly articulated. The "e" and "i" are pronounced distinctly, and the rhythm is more syllable-timed (each syllable has a more equal weight).
• Continental Portuguese: The vowels are often "reduced" or swallowed (vowel reduction), making the word sound shorter or more clipped. The rhythm is more stress-timed, meaning unstressed syllables are much weaker.

Brazilian Portuguese Examples

1. Esta mesa é de madeira. (This table is made of wood.)
2. Eu estou comprando madeira para a reforma. (I am buying wood for the renovation.)
3. O chão é de madeira. (The floor is made of wood.)
4. Ele trabalha com móveis de madeira. (He works with wood furniture.)
5. A Madeira é uma ilha linda. (Madeira is a beautiful island.)

Continental Portuguese Examples

1. Esta mesa é de madeira. (This table is made of wood.)
2. Estou a comprar madeira para a obra. (I am buying wood for the renovation.)
3. O soalho é de madeira. (The wooden floor is made of wood.)
4. Ele trabalha com mobiliário de madeira. (He works with wood furniture.)
5. A Madeira é uma ilha maravilhosa. (Madeira is a wonderful island.)