Personally - I think if you're going to do groups like Ex- or ___ son the parts of the group should all be the same. So for example, First born son and Simpson are different because the first one it's a separate word and the second one it's part of the word. Same with ex-girlfriend and exorcism etc. Maybe that's just me, but just makes it more consistent within the group.

I'm OK with the son, ex groups but the Ul one threw me due to the font. If I'd seen UL it might have made more sense. Still would have been thrown by Odinson and JonTron, whoever/whatever they are.

UI read as User interface, as the lower case Looks like a capital i -- so it threw me off. Otherwise clever. Nice job 👍

Terrible