Okay, this is a straightforward etymology but why did Raisin and Grape come to mean different things in English? I feel like that question just hovers above this etymology.

Obligatory Flork of Cows Buc-ee's comic

Yes, and it's the messy divorce because Char can't move on while Amuro doesn't want to live in his CPTSD ridden past, so you know, sometimes the situationship gets so bad an asteroid filled with nuclear bombs is launched towards the Earth. But hey we got Shino and Yamagi.