Fandom Grammar

t_verano poses an interesting question: When is it appropriate to use "which" vs. "that"? What is the appropriate comma use in each situation?

Is there, in fact, a distinct rule that applies to this situation? Or does it depend entirely on mood, which can change from one moment to the next?

( Let's find out, with examples from Discworld... )

orion117 asks us: When is it appropriate to use “different from” vs. “different than”? Or, as I like to put it: Is “different than” different from “different from”? (Meanwhile, “different to” is standing over in the corner there, all overlooked and forlorn. And rightly so, too, considering it’s a rarely-used variant which will only confuse things here.)

( With examples from Harry Potter )