Question

I would like to know when should I use the prepositions By and away.

Answer 1

The meaning of preposition by is the same as beside or at the side of. It usually shows movement past a place.

The preposition away (from) is basically the same as from, but puts a stronger emphasis on leaving the starting point. It shows the place that someone / something left. To say this in another way, it shows the starting point of the movement (while to shows the destination or result).

Answer 2

BY........ALONGSIDE, NEXT TO, BESIDE (ALADO) AWAY. AWAY FROM, AWAY FROM HOME, A MEASURE OF DISTANCE FURTHER THAN NEARBY OR NEXT TO.