As a Noun
An individual who is part of a group, but considered separately, and who is equal to all the others in some way, such as receiving something, undergoing something or being located relative to others in a similar way. English = each thing, each person.
As a Verb or Adjective
To be or to refer to every single member of a group, but considered individually and not as a whole. English = (be) each.
Used immediately after plain verbs to mean the action is spread across to, or located equally at, a number of recipients, objects or places.
They are considered individually yet are part of a group. The sign itself may be directed and modified to show their actual or relative spatial arrangement of recipients or objects. English = each, to each, to each and every.