Translation of stopper in Spanish

If it is not possible to memorize vocabulary, I will have to create my own lessons in the coming weeks. I would be happy about this information. You need to develop a feeling for the language.
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.
I have already written some vocabulary lists on paper and typed in some of them here at Vocabulix. The automatic system here works better than flashcards on paper. Too bad there is no software.