Is the word guarda-chuva the same in Brazilian and European Portuguese?

Yes

The word "guarda-chuva" is identical in spelling, meaning, and grammatical gender in both Brazilian and Continental Portuguese. The only difference is pronunciation. Brazilian Portuguese is generally "syllable-timed," meaning vowels are pronounced more clearly and openly. Continental Portuguese is more "stress-timed," characterized by significant vowel reduction, where unstressed vowels are often shortened or nearly silent.

Brazilian Portuguese Examples

1. Esqueci meu guarda-chuva no ônibus. (I forgot my umbrella on the bus.)
2. Pega o guarda-chuva, vai chover logo mais. (Grab the umbrella, it's going to rain later.)
3. Meu guarda-chuva quebrou com o vento forte. (My umbrella broke with the strong wind.)
4. Você pode me emprestar seu guarda-chuva? (Can you lend me your umbrella?)
5. Eu preciso comprar um guarda-chuva novo. (I need to buy a new umbrella.)

Continental Portuguese Examples

1. Esqueci-me do meu guarda-chuva no autocarro. (I forgot my umbrella on the bus.)
2. Leva o guarda-chuva, que está para chover. (Take the umbrella, it's about to rain.)
3. O meu guarda-chuva partiu-se com o vento forte. (My umbrella broke with the strong wind.)
4. Podes emprestar-me o teu guarda-chuva? (Can you lend me your umbrella?)
5. Eu preciso de comprar um guarda-chuva novo. (I need to buy a new umbrella.)