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

No

While the word "guarda" shares the same spelling, grammar, and core meaning in both dialects, there are differences in typical usage and pronunciation. In Brazil, "guarda" is a common, everyday term used to refer to certain types of law enforcement, such as the Guarda Municipal (Municipal Guard). In Portugal, the word is used less frequently to refer to a standard street policeman, being more specifically associated with a sentry, a soldier, or a security guard. Additionally, the pronunciation differs significantly: Brazilian Portuguese features a more open "a" at the end of the word, while Continental Portuguese uses a closed, neutralized vowel.

Brazilian Portuguese Examples

1. "Guarda o seu celular na mochila." (Keep your cell phone in your backpack.)
2. "O guarda passou por aqui agora pouco." (The officer passed by here a little while ago.)
3. "Onde você guarda as chaves?" (Where do you keep the keys?)
4. "Ela guarda um segredo muito importante." (She keeps a very important secret.)
5. "Guarde o dinheiro para o futuro." (Save the money for the future.)

Continental Portuguese Examples

1. "Guarda o teu telemóvel na mochila." (Keep your mobile phone in your backpack.)
2. "O polícia passou por aqui há pouco." (The policeman passed by here a little while ago.)
3. "Onde é que guardas as chaves?" (Where do you keep the keys?)
4. "Ela guarda um segredo muito importante." (She keeps a very important secret.)
5. "Guarda o dinheiro para o futuro." (Save the money for the future.)