When I was in Brazil, I learned to use the word violão to refer to an acoustic guitar, and guitarra to refer to an electric guitar.
- [Música] Instrumento de cordas dedilhadas, com um braço dividido em semitons por filetes de metal. (Na guitarra eléctrica, os sons são captados por micros e ampliados.)
This seems to suggest that guitarra has both an acoustic and an electric version.
Viola grande, com seis cordas, das quais três são bordões.
Which leads to viola:
Instrumento musical análogo à guitarra, mas de sons mais baixos e com a caixa em forma de 8; banza.
This directly contrasts a viola (a small violão) to a guitarra (presumably an acoustic one).
Clearly all of these words relate to various stringed instruments, where the strings may be plucked and/or played with a bow. But what, specifically, do these words refer to regionally?
My best guess is that the vocabulary I learned is specific to Brazil, and that in Portugal the vocabulary may be somewhat different.
What do these words (violão and guitarra) refer to in Brazil and in Portugal (or any other regions of note)? What is the best way to refer to the instruments represented by the English words "guitar" and "electric guitar" (and for that matter, "violin") in these regions?