Marston was an early seventeenth-century dramatist, and it is likely

Here's what Magoosh has to say -

“each other” and “one another”

These two phrases are a way to talk about 1-on-1 relationships within a group. The first thing to appreciate is that these two are entirely interchangeable: “each other” and “one another” mean the same thing. It may be that “one another” is slightly more formal, but that will not make a difference in a GMAT SC question.

For both of these, the subject has to be plural. We cannot talk about “each student” doing something to “one another” — that makes no sense. For this idiom, it must be the whole group, all the students, who do something “to each other” or “with one another”. (The actual preposition used would depend on the appropriate idiom for the verb of the sentence.)

We use this idiom, “each other” or “one another”, when, in a group, there is some relation or connection or action that is true between each pair of two people in the group. If I say …

6) All the students like each other.

… this means we could pick, from the pool of students, any random pair, in that pair, each person would like the other. That would be true for all possible pairs one could pick from the total pool.

These two structures, “each other” or “one another”, would only be used in the rare situation in which something were equally and mutually true for every possible pair in a group. That’s a rare situation. Notice, neither of these structures could be used in a situation in which each person in the group is competing with all the rest and wants to be victorious over the others.

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