Is there any difference between “D'accord” and “Okay/OK”?

Question

Recently, I've been around native French speakers on a daily basis and constantly hear phrases like “*Ah! d'accord, okay*”, but from my (very basic) understanding of French, they mean the same thing. So, why use them together like that? Is there any case when you'd use one over the other? (E.g. formally or informally?)

Answer 1

Technically you can translate d'accord as "agreed" or "alright." When speaking with older French people I tend to prefer "d'accord" but that's my own preference. While I lived in France "Ok" and "d'accord" were used interchangeably like "stop" and "arrêté."