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

Yes.

The word celebra is identical in both Brazilian and Continental Portuguese regarding its spelling, meaning, and grammar. The only difference is pronunciation. In Brazilian Portuguese, unstressed vowels (such as the first "e" in celebra) are typically more open and clearly articulated. In Continental Portuguese, unstressed vowels are heavily reduced or "closed," meaning the first "e" is pronounced much more subtly, often sounding almost swallowed or nearly silent. Additionally, Brazilian Portuguese tends to have a more melodic, syllable-timed rhythm, whereas Continental Portuguese is more stress-timed.

Brazilian Portuguese

1. Ela celebra o aniversário hoje. (She celebrates her birthday today.)
2. O governo celebra a nova lei. (The government celebrates the new law.)
3. Ele celebra cada pequena vitória. (He celebrates every small victory.)
4. A empresa celebra dez anos de fundação. (The company celebrates ten years of foundation.)
5. A empresa celebra o sucesso da equipe. (The company celebrates the success of the team.)

Continental Portuguese

1. Ela celebra o aniversário hoje. (She celebrates her birthday today.)
2. O governo celebra a nova lei. (The government celebrates the new law.)
3. Ele celebra cada pequena vitória. (He celebrates every small victory.)
4. A empresa celebra dez anos de fundação. (The company celebrates ten years of foundation.)
5. A empresa celebra o sucesso da equipa. (The company celebrates the success of the team.)