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

No

While the dictionary definition and spelling of "caminhada" are the same in both dialects, there is a difference in typical usage and pronunciation:

• Usage: In Brazil, "caminhada" is a very common, everyday term used to describe a routine or casual walk performed for exercise or health. In Portugal, "caminhada" carries a heavier connotation, usually referring to a long-distance hike, a trek, or a nature walk (similar to "hiking"). For a casual or routine walk, a person from Portugal is more likely to use "passeio" or the expression "dar uma volta."
• Pronunciation: Brazilian Portuguese features more open and clearly articulated vowels. In Continental Portuguese, there is significant vowel reduction; the unstressed "a" sounds in "caminhada" are much shorter, often sounding almost swallowed or nearly silent.

Brazilian Portuguese Examples

1. Eu faço uma caminhada de trinta minutos todas as manhãs. (I do a thirty-minute walk every morning.)
2. A caminhada é fundamental para a minha saúde. (Walking is essential for my health.)
3. Depois do trabalho, gosto de dar uma caminhada no parque. (After work, I like to go for a walk in the park.)
4. Ontem a nossa caminhada foi muito cansativa. (Yesterday our walk was very tiring.)
5. Uma caminhada rápida ajuda a despertar. (A quick walk helps to wake you up.)

European Portuguese Examples

1. Eu costumo dar um passeio de trinta minutos todas as manhãs. (I usually go for a thirty-minute stroll every morning.)
2. O passeio é fundamental para a minha saúde. (Strolling is essential for my health.)
3. Depois do trabalho, gosto de dar uma volta no parque. (After work, I like to go for a walk in the park.)
4. Ontem o nosso passeio foi muito cansativo. (Yesterday our stroll was very tiring.)
5. Uma volta rápida ajuda a despertar. (A quick walk helps to wake you up.)