People always say I'm being pedantic when I point that out, but I think it's a really important distinction to make to someone who's not aware, especially in the context of their security.

There's a line about pedantic meaning "you're right but I don't like it", but Java vs JS isn't even close! They're both OO programming languages in the C-like family with garbage collection, but they have completely different execution models, runtimes, usecases, and implementations; their close naming is a bug.