This document provides a summary of some key differences between American English and British English in terms of vocabulary, transportation, politics, buildings, dates, weight measurements, greetings, idioms, spelling, grammar, pronunciations and other linguistic differences. It outlines differences in terms used for education, exams, drunk driving, political processes, floor levels in buildings, date formats, weight units, holiday greetings, spelling of words, verb forms, grammatical structures, prepositions and more.