Яка різниця между "Донька" і "Дочка"?
I've always heard the latter; is it a regional thing or do they have slightly different meanings? Both are accepted here.
"До́нька" and "дочка́" are synonyms.
Could you also use "й", since it comes after a vowel?
Yes, it has been added.
Why does it mark it wrong if all you didn't do was capatilize it