I have seen the phrase " from afar" more frequently than "from far away." like in "He walked from afar." I just think it might be because the former has a bit of poem like. What do you think? Do the both have the same meaning, and can they be used in the same way? Please answer my question.
It's not a black-and-white difference in meaning, but, from afar usually implies movement (he came from afar), where from far away would describe an action taken while staying far away (we heard his voice from far away).
Hopefully someone can remind me if there is a grammaticistal term or explanation, all I can think of is … context? connotation?