# Between and among

Between implies a location in the middle of 2 other entities, whereas among implies that there are more than 2:

He held the gun between his knees.     The house is among the trees.

Among cannot replace between in the first example; among his knees is not acceptable. Between can replace among in the second example, although the meaning may be changed:

The house is between the trees.

Among is about being in the middle of a largish set of things, whereas between can be used when there are 2 or more things. Even so, clarity may be improved by using between when there are exactly 2 things.