Translation of tiíta

My parents were Italian, but the first language I learned was Spanish, since we lived in southern Spain. Very close to Gibraltar. When I was older, like twelve I moved with them back to Lucca in Italy.
Please explain me the exact differences between British and American .... This year I'm trying to make the TOEFL. We can then discuss how we can prepare for this exam. I failed the first time.
Thank you for correcting my mistakes. I am really grateful for that and this is exactly what I wanted, I just think about whether something similar exists also in English. I doubt it.