first the difference in pronunciation:for example:"worker" in American is pronounced as |'w:rk|,in British English it is pronounced as |'w:k| .in british english,there is|a:|,but in American English it is read as ||,such as "pass" |pa:s|,|ps|,second,different words are used in American English and British english:such as pants,trousers,different spelling:center--centre; program--programme;labor--labour