Name style is a moving target. You can learn as much from the direction names are heading as from their current popularity rankings. And when it comes to fashion in the US vs. England, some names are moving in very different directions.

I’ve identified ten names that are rising fast in one country and falling fast in the other. They’re an intriguing group, and harder to pin down than simply “most American” and “most British” names. Sometimes one country trails behind the other, picking up on a hot name a decade later when it has already passed its peak across the pond. In other cases, the name has different social connotations in the two countries. And some opposite-trending names I have no clear explanation for. (Yet!)

See for yourself. For each of these names, can you guess where it’s rising and where it’s falling?