American vs British
How to speak in American and/or British accent
The accents
As well as there are differences, related to the accent and vocabulary, between the Brazilian Portuguese and the Portuguese from Portugal , it is possible to say that these differences are also found between American English and British English.
The same color, for example, can be spelled in two different ways depending on the accent it is written: Cinza=Gray (AE) / Cinza= Grey (BE). Besides, the same object can have two different "names" depending on the accent it comes from: Borracha=Eraser (AE) / Borracha=Rubber (BE).
American vs. British English - Vowel Sounds - Pronunciation differences