Even though “each other” seems to be more commonly used than “one another,” it is most often used incorrectly. The terms both have the same basic meaning, and it is only quantity that distinguishes them. So, to understand when to use “each other” and when to use “one another,” you have to know how many are involved.
Instructions
1. Use “each other” when referring to two things.
2. Study the use of “each other” in these instances: The two dogs looked at each other. The boy and the girl help each other.
3. Use “one another” when referring to three or more things.
4. Note the use of “one another” in this instance: The dog, cat and bird looked at one another.
5. Remember one small exception to the rule, as pointed out by the Associated Press Stylebook. When referring to an indefinite number, either “each other” or “one another” can be used. For example: We love each other. We love one another.
