As prepositions the difference between amid and among is that amid is surrounded by; in the middle of; in the center of while among is denotes a mingling or intermixing with distinct or separable objects.
Among is considered less formal of the two. The word among should be used when it is followed by plural countable nouns or by a word indicating a separable group of people or things, congregation, crowd, etc,
• The priest walked among his congregation, shaking hands with a few.
Amid on the other hand is mainly used with uncountable nouns. It suggests that you are surrounded by something that is usually inseparable.
• The three rebbers escaped amid the confusion that followed the fire.