Translation:Polen und Deutschland sind Nachbarn.
Would "Deutschland" and "Rußland" be "Nachbarn"?
Not in the sense that they share a border, no.
Well, I have neighbors two doors down.
But not "Deutsch l a n d" and "Ruß l a n d"
No, I live in America. My neighbors a few doors down would be Belize and Costa Rica and such.