This question needs more context. As you will find in a dictionary, "are" is a part of the verb "to be", while "do" is a different verb. What more, specifically, do you want to know?
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This question needs more context. As you will find in a dictionary, "are" is a part of the verb "to be", while "do" is a different verb. What more, specifically, do you want to know? Perhaps you are asking about these as auxiliary verbs, but it is hard to tell.