Reciprocal Pronoun

Definition:

These pronouns show that the individual member of a plural subject mutually react on each other.They are two in numbers:

1. Each other 2. One another

For example

1. They amused each other by telling stories. (i.e. each one told stories to the other one).

2. The two men hate each other. (i.e. The two men hate, each hates the other)

3. They cheated on another. (i.e. They cheated, one cheated an other).

Remember:

Each other:
Should be used in speaking of two persons or things.

One an other:
used in speaking of more than two; but many good grammarian disagreed this rule.