Answer with explanation:
Similarity :-
Reflection and translation both are rigid motions and thus create congruent images ( Rigid motion creates congruent images ) such that the shape and size doesn't change.
Difference :- Reflection toss a figure across a line of reflection produces mirror image of the it on xy plane. It changes the orientation of the original figure.
On the other hand, translation moves a figure about some distance in a certain direction on xy plane. But orientation remains the same.