Breakdown of Sie wohnen nebeneinander und unterstützen einander.
und
and
wohnen
to live
sie
they
unterstützen
to support
Questions & Answers about Sie wohnen nebeneinander und unterstützen einander.
Why use einander instead of sich for "each other" here?
You could actually use sich! However, Sie unterstützen sich can mean "They support themselves" OR "They support each other." Using einander makes it completely clear that the action is reciprocal (person A supports person B, and vice versa), removing any ambiguity.
Why is nebeneinander written as one single word?
When einander is used with a preposition like neben (next to), they are always combined into a single word. This happens with almost all prepositions, creating common words like miteinander (with each other) and füreinander (for each other).
Does einander change its ending based on the case?
No, einander is indeclinable, meaning it never changes its form. Even though the verb unterstützen requires an accusative object, einander stays exactly the same. You never have to worry about adding case endings to it.
Why isn't there a second sie after und?
Because the subject (sie) is the same for both actions, you don't need to repeat it after the coordinating conjunction und. Just like in English, you can drop the second "they" and simply say und unterstützen einander.