each other Definition

each
adj

1. Applied to every one of two or more people or items considered separately.

pronoun

1. Every single one of two or more people, animals or things.

adverb

1. To, for or from each one.

Example: Give them one each
Thesaurus: apiece, individually, singly, separately, per person.

Idiom: each other

Used as the object of a verb or preposition when an action takes place between two (or more than two) people, etc. See also one another at one.
Example: They were talking to each other

Idiom: each way

Said of a bet: winning, if the horse, dog, etc on which the bet is placed finishes first, second or third in a race.

Etymology: Anglo-Saxon ælc, from a ever + gelic alike.

Info:

There is no difference between these two expressions in current usage, regardless of the number of people or things referred to &wbox; &wbox; &wbox;