> The German translation for that kind of ‘light‘ (as in ‘light beer‘) would be ‘leicht‘
It can be used that way, but it's not the only meaning: Leicht und stark also refer to a beer's gravity[1] instead of its alcohol content per se. A Starkbier in particular is a beer with 16° on the Plato scale[2] (which does go along with more alcohol, so in a way this distinction is splitting hairs).