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

No.

While the spelling of the word is identical, there are differences in meaning, typical usage, and pronunciation:

• Meaning/Scope: In Brazil, "televisão" is used interchangeably to refer to both the broadcasting medium (the content/service) and the physical hardware (the device). In Portugal, "televisão" more specifically refers to the medium or the service, while "televisor" is the preferred term for the physical device.
• Typical Usage (Grammar): The grammatical construction surrounding the word differs. In Brazil, it is very common to use the verb assistir with "televisão" as a direct object (assistir televisão). In Portugal, speakers typically use the verb ver or use assistir with the required preposition a (assistir à televisão).
• Pronunciation: There is a significant phonetic difference. Brazilian Portuguese is more syllable-timed and maintains clearer, more open vowels. Continental Portuguese is more stress-timed and features significant vowel reduction (where unstressed vowels become almost swallowed or neutralized).

Brazilian Portuguese Examples

1. Eu adoro assistir televisão à noite. (I love watching TV at night.)
2. A televisão está com muito chiado. (The TV has a lot of static.)
3. Você viu o que passou na televisão hoje? (Did you see what was on TV today?)
4. Eu comprei uma televisão enorme. (I bought a huge TV.)
5. Não gosto de ficar muito tempo na frente da televisão. (I don't like to stay in front of the TV for too long.)

Continental Portuguese Examples

1. Eu gosto de ver televisão à noite. (I like to watch TV at night.)
2. A televisão está com muito ruído. (The TV has a lot of noise/static.)
3. Viste o que passou na televisão hoje? (Did you see what was on TV today?)
4. Comprei um televisor enorme. (I bought a huge TV set.)
5. Não gosto de ficar muito tempo à frente da televisão. (I don't like to stay in front of the TV for too long.)