Question

Should I use between or among?

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Answer

The rule most people were taught is that between is for two things and among is for three or more. That is a useful starting point and an oversimplification.

The more accurate distinction is about individual versus collective relationships.

Use between when items are being considered individually and distinctly, however many there are. Trade agreements between the four countries is correct, because each country has a separate relationship with each other one. He divided his time between London, Paris and Rome is correct for the same reason — the destinations are distinct.

Use among when something is within a group considered collectively, without distinguishing its members. The news spread among the crowd. She was among friends. Divide the profits among the shareholders.

So the deciding question is not how many, but whether you are treating them as individuals or as a mass.

The two-versus-three rule works most of the time simply because two things are almost always considered individually. It fails whenever more than two items have distinct pairwise relationships, which is common.

A related distinction: among implies distribution within an undifferentiated group, so divided between the three children suggests specific shares while divided among the three children suggests a general sharing out.

Amongst and amidst are variants of among and amid. They mean exactly the same thing, are more common in British English, and read as slightly more formal or archaic. Neither is wrong; neither adds anything.

Between you and I is a separate and genuine error — between is a preposition, so it takes me.

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