This is reminiscent of my experience (coming from Canada). Growing up I knew dried currants to be the little mini-raisin-y things that are apparently also called Zante currants (but I didn't know that term). My mom would put them in scones, mostly.

But it was not until much later that I realized that they are so raisin-y because are actually a kind of dried grape, completely unrelated to blackcurrants and other "currant"-labelled things that are Ribes-based.