Don't worry, the names of drinks at statbucks are baroque enough that native english speakers have trouble with them too.
Well, it helps that the names are bastardizations of Italian to start with, which they then Frankenstein with pieces of English words.
Although all told, a Frappuccino is probably a better match for Akatsuki than anything else in Starbucks, even milk. It doesn't even have coffee in it, it's just a slurpee with whip cream on top.