Why do people keep asking this question? Every time it's get answered; Both are confirmed Nords.
They said races were distinct(& the revealed ones so far are), it would be disappointing if we couldn't tell them apart.
Like I said in my OP, I looked around and couldn't find if it was confirmed. And of course the so far revealed races are distinct, we've only had one human race, Orc, and Kajiit, not exactly hard to distinguish from each other.