Hi Elly I'm American, and I use all of those words on a regular basis. As for differences in meaning, I presume you've already checked a dictionary. If so, could you be more specific about exactly what it is that you find confusing?
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ElidaI find your reactions, strange.You don't need a comma in that sentence. Other than that, the sentence suggests to me (1) that you have no intention of accepting the fact that all of those words are used in American English, and (2) that you simply didn't feel like addressing my follow-up question.
ElidaI remember