The result all of tests, both of first year students and fourth year students also used American English vocabulary to communicate the most. All of wrong answers students selected a wrong answer by short or long words, their answer of British English vocabulary group almost are long word but in example vocabulary of British are short such as corn, jumper and shop. In American English vocabulary are long words such as elevator, schedule, semester and trashcan. So it actually not and don’t look the word just short or long it can’t judge. Mostly students in fourth year know difference in form of vocabulary. Least is both of slang and meaning. Mostly students in first year answer don’t know about English difference. Least is stress. It possible less those students won’t know over a half of participants in first year student, so they may be misunderstanding a question or think it doesn’t necessary.